COOLER MASTER CK721 Wireless RGB Mechanical Gaming Keyboard Installation Guide
- June 6, 2024
- COOLER MASTER
Table of Contents
CK721
WIRELESS SETUP GUIDE
IMPORTANT Please charge your new keyboard for at least 2 hours before using it for the first time.
BLUETOOTH MODE
A. USING BLUETOOTH – AN OVERVIEW
Turning On Bluetooth for the First Time
- Toggle the physical switch on the side of the keyboard to enter Bluetooth Mode.
- Press and hold FN + DEL/PGUP/PGDN for 5 seconds to enter pairing mode. The indicator will rapidly flash BLUE 3 times every second to confirm you are in Pairing Mode.
- If pairing is successful, the indicator will light up with a solid WHITE light for 3 seconds. If unsuccessful, the keyboard will enter Sleep Mode after 30 seconds. In Sleep Mode, all the keyboard lighting will be turned off.
Turning On Bluetooth After the First Time
- When the Bluetooth mode is activated, the keyboard will connect to the previous synced wireless device (DEL/PGUP/PGDN) automatically within seconds.
- If successfully connected, the indicator will light up with a solid WHITE light for 3 seconds. If unsuccessful, the keyboard will enter Sleep Mode after 30 seconds. In Sleep Mode, all the keyboard lighting will be turned off.
- To connect to a specific paired device, press FN + DEL/PGUP/PGDN after activating Bluetooth mode to connect to the corresponding device. The keyboard will connect to the device if successful and enter sleep mode after 30 seconds if the device is not found or fails to connect.
B. MANUALLY PAIRING DEVICES TO THE KEYBOARD
- Toggle the physical switch on the side of the keyboard to enter Bluetooth Mode.
- Press and hold FN + DEL/PGUP/PGDN for 5 seconds to enter pairing mode. The indicator will rapidly flash BLUE 3 times every second to confirm you are in Pairing Mode.
- If pairing is successful, the indicator will light up with a solid WHITE light for 3 seconds. If unsuccessful, the keyboard will enter Sleep Mode after 30 seconds. In Sleep Mode, all the keyboard lighting will be turned off.
C. SWITCH PAIRED DEVICES
- Press FN + DEL/PGUP/PGDN to switch to the corresponding paired device.
2.4 GHz MODE
A. USING 2.4 GHZ – AN OVERVIEW
- Toggle the physical switch on the side of the keyboard to enter a 2.4 GHz Mode. The indicator will continuously flash a BLUE light every second to confirm it is trying to connect to a device.
- Plug the included dongle into the desired device. The keyboard should automatically connect to the device.
- If successfully connected, the indicator will light up with a solid WHITE light for 3 seconds. If unsuccessful, the keyboard will enter Sleep Mode after 30 seconds. In Sleep Mode, all the keyboard lighting will be turned off.
- To pair with other devices, simply unplug the dongle and re-plug into another device. If pairing is successful, the indicator will light up with a solid WHITE light for 3 seconds. If unsuccessful, the keyboard will enter Sleep Mode after 30 seconds. In Sleep Mode, all the keyboard lighting will be turned off.
B. MANUALLY PAIRING 2.4 GHZ DONGLE TO THE KEYBOARD
- Toggle the physical switch on the side of the keyboard to enter the 2.4 GHz Mode. Press and hold FN + Enter for 5 seconds to enter pairing mode. The indicator will rapidly flash BLUE 3 times every second to confirm you are in Pairing Mode.
- Plug the included dongle into the desired device. The keyboard should automatically connect to the device.
- If pairing is successful, the indicator will light up with a solid WHITE light for 3 seconds. If unsuccessful, the keyboard will enter Sleep Mode after 30 seconds. In Sleep Mode, all the keyboard lighting will be turned off.
WIRED MODE
SWITCHING TO WIRED MODE
If the physical switch is toggled to Bluetooth or 2.4 GHz Mode
The keyboard will switch to Wired Mode automatically as the physical switch is
toggled to Wired and it is connected to a PC or laptop.
If the physical switch is toggled to Wired Mode
The keyboard will switch to Wired Mode automatically as it is connected to a
PC or laptop.
CHARGING
CHARGING THE KEYBOARD
If the physical switch is toggled to Bluetooth or 2.4 GHz Mode
The keyboard will remain connected to the wireless device and begin charging
when it is plugged into a PC, laptop, or power source. The indicator light
will be RED when charging and change to GREEN when the battery level is full.
If the physical switch is toggled to Wired Mode
The keyboard will begin charging when it is plugged into a PC, laptop, or
power source. The indicator light will be RED when charging and change to
GREEN when the battery level is full.
INDICATOR LIGHT RULE
The CAPSLK indicator will light up with a solid WHITE light when turn on the CAPSLOCK key, and turn off when turn off the CAPLSK key.
A. CAPSLK Indicator
The CAPSLK indicator will light up with a solid WHITE light when turn on the
CAPSLK key, and turn off when turn off the CAPLSK key.
B. Wireless Mode.
- In Pairing Mode, the indicator will rapidly flash BLUE 3 times one every second.
- In Connecting Mode, the indicator will continuously flash a BLUE light one every second.
- If Pairing / Connecting is successful, the indicator will light up with a solid WHITE light for 3 seconds.
C. Charging Status Indicator
When the keyboard is plugged into a PC, laptop, or power source, the indicator
will show a RED light when charging and change to GREEN when the battery level
is full.
*In Wired Mode, the indicator will change to GREEN for 3 seconds then turn off when the battery level is full.
D. Low Battery Scenario
- When the battery level falls below 15%, the indicator will rapidly flash RED light 3 times every 20 seconds. This indicator lighting will repeat until the keyboard enter Sleep Mode or is connected to the PC, laptop or power source.
*The Low Power Mode percentage can be customized via Cooler Master software. - When the battery level falls below 5%, the keyboard will go into Deep Sleep Mode. All lighting will be turned off – including the indicator.
E . Indicator on DEL/PGUP/PGDN
Press FN will show the pairing status of each location (DEL, PGUP or PGDN) with WHITE light.