MCHOSE K99 V3、K99 V2、K99 V1 FAQ & Troubleshooting Guide

1. Quick Troubleshooting Checklist

Before moving to model-specific steps, try these checks:

1. Confirm the mode switch is set correctly: wired / 2.4G / BT.
2. If using wireless mode, make sure the keyboard has sufficient battery power.
3. Reconnect the USB cable or 2.4G receiver.
4. Try another USB port and connect directly to the computer.
5. Try another connection mode.
6. Restart the host device.
7. Open M HUB and check for applicable firmware updates.
8. If a key is affected, verify it with the MCHOSE keyboard test tool.

2. Keys & System Modes

Why are the Win and Alt keys swapped?

The keyboard is likely in macOS mode.

• K99 V3: hold Fn + A for approximately 2–3 seconds to return to Windows mode.
• K99 V2: short-press Fn + A for Windows mode.
• K99 (Original / V1): use Fn + A for Windows mode.

On K99 V2/V3, macOS mode maps Win to Command and Alt to Option.

Why is the Win key not working?

1. Press Fn + Win to lock/unlock the Win key.
2. If you are using Windows, confirm the keyboard is in Windows mode.
3. On K99 V2/V3, Win Lock is not used in macOS mode.

Some keys do not respond. What should I do?

1. Reset the keyboard: K99 V2/V3 use Fn + Esc until the reset confirmation occurs; the supplied FAQs use approximately 5 seconds.
2. Use the MCHOSE Keyboard Test to confirm whether the input is detected.
3. Remove and reseat the affected switch if it is a hot-swappable key.
4. Test with a spare compatible switch if available.
5. In wireless mode, check battery level.
6. Try another USB port, cable, or connection mode.
7. Check for an applicable firmware update in M HUB.

A key registers twice or repeats unexpectedly. What should I do?

• K99 V3: open M HUB > Performance Settings and enable Key Chatter Optimization, then retest.
• K99 V2: if Top Speed is enabled, temporarily disable it and compare behavior.
• For either model, reseat the switch and test a spare compatible switch if available.

A key does not return smoothly after I press it

1. Turn off/disconnect the keyboard.
2. Remove the keycap and inspect for dust or debris.
3. Reseat or replace the compatible switch.
4. For larger stabilized keys, confirm that the stabilizer moves freely and the keycap is installed evenly.
5. If the key continues to bind, contact MCHOSE Support.

A shortcut performs a different function than expected

1. Confirm the physical key with the keyboard test tool.
2. Check whether your application/game has its own shortcut assigned.
3. Review M HUB key mappings and Fn-layer assignments.
4. Reset the keyboard if you want to restore the default layout.

How do I reset the keyboard safely?

Use the keyboard shortcut rather than disconnecting power repeatedly. K99 V2/V3 use Fn + Esc until the reset confirmation occurs. The supplied FAQs use approximately 5 seconds. On K99 V3, some printed material lists a shorter hold, so continue holding until the confirmation appears.

How can I tell whether a problem is the switch or the keyboard?

1. Use the keyboard test page to confirm the affected key.
2. Move a known-working compatible switch into the affected socket.
3. If the problem follows the switch, replace the switch.
4. If the same socket still does not respond with a known-working switch, contact MCHOSE Support.

The key works in the test page but not in one application

The keyboard hardware is likely sending the input. Check the application's shortcut assignments, game keybinds, accessibility settings, or M HUB remapping. Restore the key to default and test again.

3. Windows / macOS / Fn Shortcuts

How do I switch between Windows and macOS modes?

Model	Windows	macOS
K99 V3	Hold Fn + A ~2–3 sec	Hold Fn + S ~2–3 sec
K99 V2	Short-press Fn + A	Short-press Fn + S
K99 (Original / V1)	Fn + A	Fn + S

Can I customize Fn-layer shortcuts?

K99 V2 and K99 V3 support model-dependent Fn-layer customization through M HUB. If you reassign a system shortcut, its original behavior may be replaced by your custom assignment.

Why do K99 V2 F1–F12 behave differently on macOS?

In K99 V2 macOS mode, the F-row provides supported media/system functions with a single press. Hold Fn with the corresponding F-key to send the standard F1–F12 key value.

Why does Fn + A / Fn + S behave differently between K99 V2 and V3?

The generations use different system-mode switching timing. K99 V2 uses a short press. K99 V3 intentionally uses a longer hold of approximately 2–3 seconds to reduce accidental mode changes.

Why did a default Fn shortcut stop working after I used M HUB?

A custom Fn-layer assignment can replace the default shortcut. Open M HUB, select the Fn layer, and restore that key to its default function.

4. Numeric Keypad

Why do K99 V2 number-pad keys perform navigation functions when Num Lock is off?

On Windows, this is standard numeric-keypad behavior. With Num Lock off:

Key	Function	Key	Function
1	End	2	Down
3	PgDn	4	Left
5	No function	6	Right
7	Home	8	Up
9	PgUp	0	Insert
.	Delete

Why might the Num Lock indicator remain off on macOS?

macOS handles the numeric keypad differently from Windows and does not use the same Num Lock state for standard numeric entry. The keypad can remain available even if the indicator does not behave like it does on Windows.

5. Connection Problems

Which connection modes do the K99 keyboards support?

K99 V3, K99 V2, and the original K99 support USB wired, 2.4G wireless, and BT wireless. Only one active connection mode is used at a time.

How do I know which wireless channel K99 V3 is using?

Hold Fn. The supplied V3 FAQ lists: 2.4G = green, BT 1 = blue, BT 2 = purple, BT 3 = cyan.

Can the keyboard connect to three BT devices at once?

It can store multiple BT pairings for quick switching, but it does not actively control all paired devices simultaneously.

The keyboard is paired to BT channel 1, but I want to pair a different device on the same channel

1. Remove/forget the existing K99 pairing on the old host if it is still available.
2. Set the K99 to B mode.
3. Hold Fn + 1 until the channel flashes rapidly.
4. Pair the new host.

The new pairing replaces the stored device information for that channel.

Can I use 2.4G and BT at the same time?

No. Select one active connection mode with the physical switch. BT channels store pairings for switching, but they are not simultaneous active host connections.

6. BT Troubleshooting

BT feels slower than expected

BT prioritizes convenient wireless connectivity and multi-device switching. When lower latency is important, use 2.4G or USB wired mode.

The keyboard does not automatically reconnect in BT mode

1. Confirm the mode switch is set to B.
2. Make sure BT is enabled on the previously paired host.
3. Keep the keyboard within normal wireless range.
4. Remove/forget the existing K99 pairing from the host.
5. Hold the desired Fn + 1 / 2 / 3 channel until it enters pairing mode.
6. Pair the keyboard again.

K99 V2 shows both BT 3.0 and BT 5.0 device names. Which should I choose?

Use the BT 5.0 device entry when your computer or mobile device supports it. Otherwise, use the compatible option offered by the host.

BT is unstable

• Reduce nearby wireless interference where practical.
• Try a different BT channel.
• Remove the old pairing and pair again.
• Update the host's BT driver when applicable.

7. 2.4G Troubleshooting

The 2.4G connection disconnects or becomes unstable

1. Reconnect the receiver.
2. Try another USB port.
3. Connect the receiver directly to the computer.
4. Avoid placing the receiver immediately beside other wireless receivers or high-bandwidth USB devices.
5. Keep the keyboard within a reasonable operating range.
6. Check battery level.
7. Update applicable firmware.
8. Re-pair the receiver if needed.

How do I manually re-pair the K99 V2/V3 receiver?

1. Disconnect the receiver.
2. Hold Fn + ~ for approximately 3 seconds until the pairing indicator flashes rapidly.
3. Insert the receiver while the keyboard is nearby.
4. Wait for pairing confirmation.

How do I re-pair the original K99 receiver?

Set the original K99 to 2.4G, hold Fn + ` until the status indicator flashes rapidly, then connect the original receiver.

The 2.4G receiver is connected, but the keyboard does not type

1. Confirm the keyboard switch is in 2.4G mode.
2. Reconnect the receiver.
3. Try another USB port.
4. Check battery level.
5. Run the manual pairing procedure.

Should I use a USB hub for the 2.4G receiver?

A hub can work, but for troubleshooting and the most predictable connection, connect the receiver directly to the computer. If direct connection solves the problem, the hub, cable, port placement, or local USB interference may be contributing to instability.

8. Wired Troubleshooting

The keyboard disconnects in wired mode

1. Reconnect both ends of the USB cable firmly.
2. Try another computer USB port.
3. Try another compatible data cable.
4. Connect directly to the computer instead of through a hub or dock.
5. Test on another computer if available.

If the problem continues across multiple ports, cables, and computers, contact MCHOSE Support.

Windows 10/11 does not recognize K99 V2

1. Test another connection mode or another computer first.
2. Reconnect the keyboard and try another USB port.
3. Open Windows Device Manager.
4. Check Keyboards and Human Interface Devices.
5. Update/reinstall the relevant HID/keyboard device if necessary.
6. Restart Windows.

The keyboard works for charging but does not type over USB

• Confirm the cable supports data, not charging only.
• Set the mode switch to the wired / OFF position.
• Try another direct USB port.
• Try another compatible data cable.
• Test on another computer.

The keyboard types over USB but M HUB does not detect it

Restart M HUB, reconnect the keyboard, try another direct USB port, and verify that no second M HUB instance is running. If using M HUB Web, grant HID permission and close M HUB Desktop first.

9. Battery & Charging

What are the battery capacities?

Model	Capacity
K99 V3 8K	10,000mAh (3.7V, 37Wh)
K99 V2	8,000mAh
K99 (Original / V1)	6,000mAh

How do I check the K99 V3 battery?

• In wireless mode, press Fn + B.
• M HUB may show an estimated level in supported modes.
• The host BT settings may also show an estimate when supported.

What happens when K99 V3 battery is low?

At approximately 5% remaining battery, the status indicator may flash red and lighting may turn off to conserve the remaining battery.

How do I check the K99 V2 battery?

• Use Fn + Home to switch the ambient bar to battery/status mode.
• In 2.4G mode, M HUB can show an estimated level.
• In BT mode, the operating system may show an accessory-battery estimate.

How long does charging take?

Model	Computer USB	Compatible Adapter
K99 V3	Approx. 12–15 hours	Approx. 6–7 hours; up to 10W
K99 V2	Approx. 10–12 hours	Around 8 hours with compatible 5V source; source lists approx. 5V / 1A

Charging time varies with the power source, cable, battery level, battery condition, and whether the keyboard is being used while charging.

Why is the battery percentage not changing immediately?

Battery information shown by M HUB or the operating system is an estimate and may update with a delay rather than continuously in real time.

Why is wireless runtime shorter than the reference value?

Reference runtime is strongly affected by RGB brightness/effect, polling rate, sleep settings, wireless conditions, battery age, and active usage. High-brightness animated lighting and shorter sleep intervals will reduce runtime compared with backlight-off conditions.

Can I use the keyboard while it is charging?

Yes, K99 V2/V3 can operate by USB while charging. Charging can take longer during active use, especially with lighting enabled.

K99 V2 M HUB says “Charging” instead of showing a percentage

This is expected in the supplied K99 V2 documentation. The battery value shown in M HUB is an estimate, and the interface may prioritize the charging state while USB power is connected.

10. Lighting & Indicators

Some keys do not light up

1. Make sure the backlight is enabled.
2. Increase brightness using the shortcut for your exact model.
3. Switch to another simple lighting mode.
4. Reset the keyboard.
5. Make sure the battery is not critically low.
6. Check for an applicable firmware update.

Why can I still see light after turning off the K99 V3 key backlight?

K99 V3 uses separate key-backlight and ambient-light systems. If the key backlight is off but ambient lighting remains enabled, light can still be visible around the upper keyboard area.

Why can't I select white with the K99 V3 ambient-light shortcut?

The supplied K99 V3 FAQ states that white is not included in the onboard ambient-light color presets. For supported Static and Breathing modes, additional color adjustment including white can be available through M HUB.

Why does white ambient lighting show a slight brightness variation?

Subtle, consistent differences can be visible because light passes through the diffuser and around internal structures. If a section is clearly unlit, strongly flickers, or differs substantially from the rest, contact MCHOSE Support.

Why does the physical RGB color look different from M HUB?

Minor differences can result from LED characteristics, keycap/switch light transmission, housing, ambient light, viewing angle, and monitor color reproduction.

Can K99 V2 key backlight, side lighting, and ambient light bar be controlled together?

These lighting zones are independently controlled. Their effects, colors, and on/off states may need to be set separately.

The Caps Lock indicator does not match the current state on K99 V2

1. Reset the keyboard with Fn + Esc.
2. Reconnect it.
3. Try another connection mode.
4. Check firmware.

On Mac, the built-in keyboard and external keyboard indicator behavior may not always mirror each other.

How many K99 V2 backlight selections are there?

The supplied K99 V2 manual lists 16 selections, including static, breathing, rainbow-style, reactive/ripple/animated effects, custom lighting, and the off selection.

How many K99 V3 backlight selections are there?

The supplied K99 V3 FAQ lists 24 selections, including custom lighting and the backlight-off selection.

Why can't I change the color of some animated effects?

Some effects use predefined color patterns. Color, speed, or brightness controls can therefore be unavailable for that specific effect. Switch to a static or another configurable mode when you need a manually selected color.

K99 V2 ambient-light color/brightness controls do nothing

If the ambient light bar is in battery-display mode, its color and brightness are controlled by battery status and cannot be manually changed. Use Fn + Home to switch to another ambient/status mode.

11. K99 V3 Multimedia Knob

What does the knob do?

• Rotate clockwise: volume up.
• Rotate counterclockwise: volume down.
• Press: mute / unmute.
• The knob can wake the keyboard from sleep.

Can I remap the knob?

The press action can be reassigned to another supported function through M HUB. The rotary action is used for system volume control in the supplied K99 V3 documentation.

The knob clicks, but mute does not activate

Press the knob fully downward. The mechanism uses a longer press travel to reduce accidental activation. Avoid pressing strongly from the side.

Very fast rotation skips some volume steps

The encoder processes volume changes in individual steps. For consistent adjustment, rotate the knob at a normal controlled speed.

Does the knob change volume in fixed steps?

The supplied K99 V3 FAQ lists approximately 2% system-volume adjustment per rotary step. Operating-system behavior can affect how that percentage is displayed.

12. M HUB

Which K99 connection modes work with M HUB?

• K99 V3: USB wired and 2.4G.
• K99 V2: USB wired and 2.4G.
• BT: not supported for K99 V2/V3 M HUB configuration.
• Original K99: official original setup instructions use USB for software setup.

M HUB does not detect the keyboard

1. Use a supported connection mode.
2. Reconnect the USB cable/receiver.
3. Try another USB port.
4. Connect directly to the computer.
5. Restart M HUB.
6. For 2.4G, confirm receiver pairing.
7. For M HUB Web, grant browser HID permission.

M HUB Desktop does not open or closes unexpectedly

1. Fully exit M HUB, including background processes.
2. Open it again.
3. Try administrator permission on Windows if needed.
4. Reinstall the current official version.
5. Use M HUB Web temporarily for supported functions.

Which browser should I use for M HUB Web?

Current MCHOSE support documentation lists Chrome, Edge, and Opera for the Web version. Do not run the Web and Desktop versions at the same time.

Music-reactive lighting does not work

• Use M HUB Desktop, not the Web Driver.
• Use USB wired or 2.4G.
• Keep M HUB running in the background.
• Make sure audio is playing on the computer.

Can I use M HUB on macOS?

Current MCHOSE support documentation provides M HUB Web for macOS through supported Chromium-based browsers. The current Desktop client is for Windows 10 and above.

Can I configure K99 V2/V3 through BT in M HUB?

No. Use USB wired or 2.4G for M HUB configuration on K99 V2/V3.

Can I run M HUB Web and Desktop at the same time?

Current MCHOSE support guidance recommends using only one at a time to avoid device-access conflicts.

M HUB Web is blank or does not show a device prompt

• Use a currently supported browser such as Chrome, Edge, or Opera.
• Reload the page.
• Confirm the keyboard is connected in a supported mode.
• Grant HID/device permission when prompted.
• Close M HUB Desktop before trying Web again.

Why doesn't an M HUB option appear on my K99?

Feature availability differs by K99 generation and firmware. For example, K99 V2 Top Speed is not the same as K99 V3 advanced-key functions, and the supplied sources do not document the V3 three-profile onboard feature for K99 V2 or the original K99.

13. Macros & Performance

How do I create a macro?

1. Open M HUB > Key Settings.
2. Create a new macro and name it.
3. Select the playback behavior.
4. Record the key sequence.
5. Review/adjust delays.
6. Save it.
7. Assign it to the desired key.

Why does K99 V2 briefly interrupt a held key when a macro runs?

The supplied K99 V2 documentation notes that a currently held key may briefly stop registering when a macro begins or ends. Press the affected key again after the macro completes.

What is K99 V2 Top Speed?

Top Speed is a low-latency mode for USB wired and 2.4G. The supplied FAQ lists a minimum response target of approximately 2ms. Because the mode prioritizes faster detection, unintended repeated inputs should be compared with Top Speed disabled.

Does K99 V2 support Rapid Trigger or magnetic-switch actuation settings?

No. K99 V2 is a mechanical keyboard. The supplied FAQ states that Rapid Trigger, adjustable magnetic actuation, magnetic dead-zone adjustment, and magnetic-switch scan settings are not available.

What polling rates does K99 V2 support?

250Hz, 500Hz, and 1000Hz.

What polling rates does K99 V3 support?

The supplied K99 V3 documentation lists 1000Hz, 2000Hz, 4000Hz, and 8000Hz on supported K99 V3 8K versions.

Why does the keyboard briefly restart after changing polling rate?

A short restart/reconnection can occur when the polling-rate setting is applied. Wait a few seconds for the keyboard to reconnect to M HUB.

What are SOCD, MT, TGL, and CB on K99 V3?

• SOCD: defines how two linked keys behave when pressed together.
• MT: assigns different tap and hold actions to one key.
• TGL: toggles a supported input on/off.
• CB: assigns a supported modifier + standard key combination to one key.

What does an 8000Hz polling rate mean?

8000Hz means the keyboard can report its input state to the computer up to 8,000 times per second, corresponding to a maximum USB report interval of about 0.125ms. This is the report interval only; total input-to-display latency also depends on the keyboard scan process, operating system, application, and display pipeline.

Should I always use 8000Hz on K99 V3?

Not necessarily. Use the highest setting that is stable and appropriate for your computer. Higher polling rates increase report frequency and can use more system processing than lower rates.

Can I use K99 V3 advanced functions in competitive games?

Only where the game, tournament, anti-cheat environment, or online service allows them. Check the applicable rules before using SOCD, TGL, macros, or other advanced input behavior in competitive play.

14. Sleep & Wake

How do I adjust sleep time?

Open M HUB > Performance Settings > Sleep Settings. The supplied K99 V2/V3 troubleshooting materials list approximately 30 seconds to 20 minutes with an option to disable automatic sleep. Available labels can vary by M HUB version.

The first key press after sleep does not register immediately

After a low-power state, the keyboard and host may need a short moment to restore the wireless connection.

• Check battery level.
• Try 2.4G or wired mode.
• Review USB/BT power-management settings on the host.
• Reconnect/re-pair the BT connection if needed.

How do I wake the keyboard?

Press any key. K99 V3 can also be woken using the multimedia knob.

Why does the keyboard wake but the computer stay asleep?

Whether a USB or wireless keyboard can wake the host computer depends on the computer's operating-system and power-management settings. Confirm that keyboard/HID wake permission is enabled on the host if you need this behavior.

Can I disable automatic sleep?

The supplied K99 V2/V3 troubleshooting guides list an option to disable automatic sleep. The exact label may appear as Off, Disable, or Never depending on M HUB version.

15. macOS Compatibility

Some characters are incorrect on Mac

1. Open macOS System Settings > Keyboard.
2. Open the keyboard identification / Change Keyboard Type option.
3. Follow the prompts.
4. Select the appropriate ANSI layout when applicable.
5. Confirm the K99 is in macOS mode.

Why are Command and Option on different keycaps?

On K99 V2/V3 in macOS mode, the physical Win/Alt positions are adapted to provide Command/Option behavior. The legends on the original Windows-oriented keycaps may therefore differ from the macOS function.

Why does an original K99 / K99 V2 BT device list show more than one protocol version?

Some K99 materials expose separate BT 3.0 and BT 5.0 device entries. Select the newer compatible entry when your host supports it; use the other entry only when required for compatibility.

16. Keycaps, Switches & Typing Feel

Why do different keys sound slightly different?

Mechanical-keyboard sound can vary by key position, keycap size, switch characteristics, stabilizers, internal acoustic materials, and typing force. Larger keys such as Space, Enter, and Shift can sound different from letter keys.

Why do side-printed legends look different from front-facing legends?

Side-printed legends are viewed through a different angle and keycap surface. Visibility and light transmission can vary with viewing angle, ambient lighting, brightness, and keycap material.

Why can I see part of the switch below some K99 V3 MDA keycaps?

MDA-profile keycaps can use a shorter skirt and different shape from other profiles, so part of the switch housing can be visible from some viewing angles. This does not by itself affect keyboard operation.

What is the small mark on the underside of a molded keycap?

A small mark can be the injection gate created during the molding process. If a keycap has cracking, deformation, or missing material, contact MCHOSE Support.

Why do keycaps have a small amount of movement?

Mechanical switch stems and keycaps use manufacturing tolerances. If a keycap is noticeably loose, tilted, or unstable during normal typing, remove and reinstall it, confirm the switch is fully seated, and test another compatible keycap/switch if available.

What are the main K99 V2 keycap sizes?

• Left Shift: 2.25U
• Right Shift: 1.75U
• Spacebar: 6.25U

How long are K99 V2 switches rated to last?

The supplied K99 V2 FAQ lists an approximate lifespan of 50 million keystrokes, depending on the switch configuration.

How do I remove a keycap?

1. Disconnect or turn off the keyboard.
2. Place the included puller around the keycap.
3. Pull upward gently and evenly.
4. For larger stabilized keys, lift carefully from both sides.

How do I remove a switch?

1. Remove the keycap.
2. Place the switch puller around the retaining tabs.
3. Squeeze gently.
4. Pull the switch straight upward without twisting.

A replacement switch will not seat properly

Stop and inspect the switch pins. A bent pin can prevent installation and may damage the socket if forced. Straighten the pin carefully, align the switch, and press down evenly.

17. Cleaning & Maintenance

How should I clean the keyboard?

1. Disconnect or turn off the keyboard.
2. Remove keycaps if deeper cleaning is required.
3. Use a soft brush or air blower to remove dust and debris.
4. Clean keycaps separately if needed.
5. Make sure keycaps are fully dry before reinstalling.
6. Keep liquids away from switches, sockets, ports, and internal electronics.

The keyboard moves slightly on the desk

1. Make sure both kickstands are set to the same position.
2. Place the keyboard on a flat, stable surface.
3. Check that the anti-slip pads are clean and properly positioned.

Can I replace the case, plate, PCB, or internal dampening materials?

Keycaps and compatible switches are designed for user replacement. Replacing internal structural parts requires keyboard disassembly and is not recommended as routine user maintenance. Damage caused during unauthorized modification may affect warranty coverage, subject to the applicable warranty terms and local regulations.

Should I wash the keyboard with water?

No. Keep liquids away from the keyboard's internal electronics, switch sockets, and ports. Keycaps can be cleaned separately and must be fully dry before they are reinstalled.

Can I use compressed air?

A soft air blower is appropriate for loose dust. Use controlled airflow and avoid directing high-pressure air at very close range into switches or ports.

18. Firmware

How do I update K99 V2/V3 firmware?

1. Connect through a supported M HUB mode.
2. Open M HUB.
3. Open the firmware / Other Settings page.
4. Check for an available update.
5. Follow the on-screen instructions.
6. Keep the keyboard connected and do not interrupt power.

The firmware update does not complete

1. Reconnect the keyboard.
2. Restart M HUB.
3. Try another direct USB port.
4. Retry the update when the connection is stable.

How do I use K99 V3 firmware recovery?

1. Connect in wired mode.
2. Hold Esc + Left Ctrl.
3. While holding the keys, disconnect and reconnect the USB cable.
4. Open M HUB and follow the recovery instructions.

Should I use firmware recovery for every update problem?

No. First retry the normal update through a stable direct connection. K99 V3 firmware recovery is a troubleshooting procedure intended for cases where the normal process cannot complete and an official guide or MCHOSE Support calls for recovery.

19. Product Information

How many keys does K99 V3 have?

99 keys, excluding the multimedia knob.

How many keys does K99 V2 have?

99 keys in a 98% layout.

Where is the K99 V3 serial number?

The supplied K99 V3 FAQ states that the SN / serial number is located under the keyboard's kickstand area.

What are the K99 V3 dimensions and weight?

Approximately 399 × 150 × 47mm, with a front height of approximately 19mm. Weight is approximately 1277g.

What are the K99 V2 dimensions and weight?

Approximately 399 × 150 × 47mm and approximately 1.6kg excluding cable and receiver, as listed in the supplied K99 V2 FAQ.

What is the difference between K99 V3 PC and FR4 plate options?

The supplied K99 V3 FAQ describes PC as the more flexible plate option with a deeper/more muted acoustic tendency, while FR4 is stiffer and can produce a firmer, higher-pitched acoustic character. Actual sound and feel also depend on switches, keycaps, internal materials, and typing force.

What are the original K99 core specifications?

The current official original-K99 product page lists a 98% layout, gasket mount, hot-swap support, N-key rollover, 6,000mAh battery, USB/2.4G/BT tri-mode connectivity, PBT keycaps, surround RGB, and Windows/macOS support.

What are the main K99 V3 software differences from K99 V2?

K99 V3 adds the supplied-source support for 1K/2K/4K/8K polling on the 8K version, up to three onboard configurations, Key Chatter Optimization, and advanced SOCD / MT / TGL / CB functions. K99 V2 instead documents 250/500/1000Hz polling and Top Speed.

20. Still Need Help?

If the issue continues, contact MCHOSE Support and provide as much of the following as possible:

• Product model (K99 V3 / K99 V2 / original K99)
• Connection mode
• Computer or device model
• Operating system
• M HUB version
• Keyboard firmware version
• Short issue description
• Photos or a short video when the issue is visible

Email: support@mchose.store