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Jerkmate
https://docs.qmk.fm/features/ps2_mouse
PS/2 Mouse Support | QMK Firmware
Documentation for QMK Firmware
ps 2 mouseqmk firmwaresupport
https://allpinouts.org/pinouts/cables/input_device/usb-to-ps-2-mouse-adapter/
USB to PS/2 mouse adapter ยท AllPinouts
ps 2 mouseusbadapterallpinouts
https://hardwarebook.info/Serial_to_PS-2_Mouse
Serial to PS/2 Mouse - HwB
Serial to PS/2 Mouse adapter. Pinout for connecting a serial mouse (DB9) to a PS/2 port (Mini-DIN 6).
ps 2 mouseserialhwb