USB to RS-232 Adapter (100 cm) - UC232A1, ATEN USB Converters | ATEN Belgium - English
IOGEAR - GUC232A - USB to Serial Adapter
ATEN UC232A USB to RS232 DB 9 PIN PDA Serial DB9 Port Adapter PC Mac Drivers USB A type Convert RS 232 Serial Interface|Computer Cables & Connectors| - AliExpress
USB to RS-232 Adapter (35cm) - UC232A, ATEN USB Converters | ATEN Corporate Headquarters
IOGEAR - GUC232A - USB to Serial Adapter
Aten USB to RS-422 485 Adapter (UC485)
ATEN USB to PDA/Serial (DB9) Adapter w/ PC & Mac Drivers - Newegg.com