I think we have lost Tandy/Radio Shack in the UK so I cannot vouch for my selections but try:

USB/Serial converter


Female/Female null modem cable

Looks like posts have crossed


Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).