Amazon.com: Wiegand Converter Wiegand to USB Wiegand to Serial RS232/PS2/ABA/TTL, Serial to Wiegand Converter, Up to 128 Bits Wiegand Data, Android/Linux/Widows/iOS(USB) : Electronics
Serial connector adapter DB9 male to PS2 miniDIN 6-pin female - Cablematic
USB-SERIAL-PS2 - USB to RS232/PS2 Adapter
USB Combo Adaptor RS232/PS2/PP -- DataPro
8P Mini Din Male to Female DB9 RS232 PLC Cable 2.5M for Mitsubishi Melsec PS2 to DB9 keyboard cable 3M 5M 1.5m 6ft|rs232 cable|db9 rs232keyboard cable - AliExpress