Plugable USB to RS-232 DB9 Serial Adapter (Prolific PL2303HX Chipset) – Plugable Technologies
SABRENT USB 2.0 to Serial (9-Pin) DB-9 RS-232 Converter Cable, Prolific Chipset, HEXNUTS -, [Windows 10/8.1/8/7/VISTA/XP, Mac OS X 10.6 and Above] 2.5 Feet (CB-DB9P) : Electronics