Have you converted an old XT/AT keyboard to work with USB (not PS/2 but big DIN-5 connector) by soldering or using adapters? - Quora
SANOXY USB to Dual PS2 Keyboard Adapter for Keyboard, Mouse SANOXY-VNDR-Dual-pS2-blu-2port - The Home Depot
tinkerBOY IBM Model F XT / Model M AT Keyboard (180 Degree, 5-pin DIN) To USB Converter with Vial QMK Firmware - tinkerBOY
PS/2 to USB Keyboard Adapter
iPad USB Keyboard and Mouse Interface Adapter - Adaptive Tech Solutions, LLC
Amazon.com: StarTech.com Replacement PS/2 Keyboard to USB Adapter - F/M - Keyboard adapter - PS/2 (F) to USB (M) - GC46MFKEY, Purple : Electronics
What adapter or converter do I need for my keyboard?
PC Keyboard Adapter , plug a USB Keyboard or mouse into a PS/2 port on the PC | eBay
StarTech.com Replacement USB Keyboard to PS2 Adapter FM Connect a USB Keyboard to a computer through a PS2 port usb to ps2 adapter usb keyboard to ps2 adapter - Office Depot
Amazon.com: SANOXY PS2 Keyboard to USB Adapter : Electronics
PS/2 Female to AT Male Keyboard Adapter | Keyboard and Mouse | Computer Cables | USB and PC
SANOXY PS/2 Female to USB Male Adapter-Replacement PS/2 Keyboard to USB Passive Adapter - M/F (BLACK) - Walmart.com
StarTech.com Replacement USB Keyboard to PS2 Adapter FM Connect a USB Keyboard to a computer through a PS2 port usb to ps2 adapter usb keyboard to ps2 adapter - Office Depot
Amazon.com: StarTech.com Replacement PS/2 Keyboard to USB Adapter - F/M - Keyboard adapter - PS/2 (F) to USB (M) - GC46MFKEY, Purple : Electronics
Mouse Keyboard Converter, Game Controller Adapter for USB 2.0 Mouse Portable Keyboard Adapter Compatible with PS4/Xbox One/N-Switch/PS3 - Walmart.com
tinkerBOY IBM Terminal Keyboard (240 Degree, 5-pin DIN) to USB Converter with Vial QMK Firmware - tinkerBOY
StarTech.com Keyboard adapter - 6 pin PS/2 (F) - 4 pin USB Type A (M) - GC46MFKEY - USB Adapters - CDW.com
XT/AT Keyboard To USB Converter - Buy, Sell, and Trade - AtariAge Forums
XTiny: XT/AT to USB Keyboard Adapter from Future Retro on Tindie
PS/2 PS2 Male to USB Female Adapter Converter Connector For Computer PC Keyboard | eBay
PS/2 to USB Active Keyboard and Mouse Adapter
