Moxa UPort 1150I - 1 Port USB-to-Serial 2 KV

Gearmo USB-C 2.0 to Serial RS-232 Adapter

UOTEK UT-8801 - USB type A male to RS232 DB9 male 1-port +/-15KV electrostatic protection

rayihni USB TO 485 422 TTL CONVERTER

rayihni USB TO RS485 CONVERTER

rayihni USB to serial adapter - Type A USB DB9

rayihni DB9 TO RJ45 SERIAL ADAPTER

rayihni USB to DB9 Serial Converter - PL2303 9 PIN MALE

rayihni USB to RS485 Converter - USB 2.0 PL2303

Sabrent USB 2.0 to Serial Converter Cable - 9 Pin DB 9 RS 232

rayihni PCI TO 2 PORTS RS232 SERIAL CARD - DB9 9PIN AX9865