4 Port Professional RS-232 USB 2.0 to Serial Adapter
USB to RS-232 DB9 1-Port Serial Interface Adapter - Sealevel
Usb Serial Prolific | 9 Pin Serial Cable | Pin Cable Adapter | Usb Adapter Cable - Pc Hardware Cables & Adapters - Aliexpress
4 Port USB to RS232 Serial Adapter Hub - Serial Cards & Adapters | StarTech.com
32 Port RS-232 USB-to-Serial Adapter - Coolgear
4-Port USB to RS-232 DB9 Serial Adapter w/ Prolific Chipset
StarTech.com 8 Port USB to Serial RS232 Adapter - Wall Mount - Din Rail - COM Port Retention -
8-Port USB to RS-232 Serial Adapter Hub
32 Port RS-232 USB-to-Serial Adapter - Coolgear
USB to RS232 Hub (4-Port / Industrial) – CommFront
USB-A to Serial Adapter Cable - RS232, DB9, 5-ft. | Eaton
Keyspan RS232 to USB-A Adapter, DB9, 3-ft Cable | Eaton
4-Port USB to RS-232 Hub - UC2324, ATEN Converters | ATEN Corporate Headquarters
Black Box 8-Port USB to RS232 Serial Adapter / Converter, 8 x DB9 Male - IC1023A - -
Parallax USB to Serial (RS-232) Adapter with Cable - Parallax
StarTech 4-Port USB to Serial Adapter Hub with COM ICUSB2324X
4-Port USB to RS232 Converter DB9 | Black Box
