1 Port USB to RS232 DB9 Serial Adapter - Serial Cards & Adapters
FTDI USB-to-Single Port Serial Adapter (USB1PFTDI) - Astro-Physics
69822 Goobay - USB to RS232 converter | D-Sub 9pin male,USB A plug; USB 2.0; USB/RS232 | TME - Electronic components
UPORT 1110 | Moxa USB to Serial Converter, RS232, 1 DB9 Male | Distrelec Export Shop
UT232R-500 - Ftdi - ADAPTOR CABLE, USB - RS232, 5M
Tripp Lite USB to Serial Adapter Cable USB-A to DB9 RS-232 M/M 5ft 5' - U209-000-R - -
Plugable USB to RS-232 DB9 Serial Adapter (Prolific PL2303HX Chipset) – Plugable Technologies
Ugreen Usb To Rs232 Com Port Serial Pda 9 Db9 Pin Cable Adapter Prolific Pl2303 For Windows 7 8.1 Xp Vista Mac Os Usb Rs232 Com - Pc Hardware Cables & Adapters - AliExpress
USB To RS232 TTL Converter Adapter
Dual port RS232 Serial to USB adapter for RS232 data conversion.