K375s Unifying Mechanical Keyboard 68 Keys (Similar to Chief Player MK680, etc.)

The K375s Unifying mechanical keyboard is a 68-key keyboard compatible with various cases including the Chief Player MK680, 68V2, Thunderobot KC3068, and Hama 68.
 
It uses the K375s main controller and an SGM3157 chip. It supports F-key functionality via FUNC combined with the numeric keypad (characters are indicated on the lower right corner of the numeric keypad, and on the bottom of the Del, PgUp, PgDn, and lower left/right arrow keys). The FN key is the original K375s FN key
 
, secured by a surface-mount nut on the PCB. A 5cm 27-pin ribbon cable is sufficient.
The motherboard uses a 1.25mm standard connector for the lithium battery and main controller power supply, but direct soldering is also possible.
 
The PCB features a 5-pin design with soldering and hot-swapping holes, supporting 3-pin switches for easy selection between hot-swappable and soldered
 
switch headers. The indicator lights are located below the Esc key, using common-anode RGB LEDs, with RGB corresponding to channels 1, 2, and 3.