StarTech.com 4 Port Serial Hub USB to RS232/RS485/RS422 Adapter, Industrial USB 2.0 to DB9 Serial Converter Hub, IP30 Rated, Din Rail Mountable Metal Serial Hub, 15kV ESD Protection - 6ft Locking Cable
4 Port USB 2.0 to Serial Adapter Hub - Serial Cards & Adapters
4 Port USB to RS232 Serial Adapter Hub - Serial Cards & Adapters
4-Port USB to RS-232 Serial DB9 Adapter Cable w/ FTDI Chip
USB 2.0 to 4 port RS232 Serial Adapter Cable - allinbest.com
USB 2.0 to 4 Ports Serial RS-232 COM DB9 Male Adapter Cable FT232 USB-4x RS232 : Electronics
Serial cable adapter RS232 TTL 4 pin to USB for Arduino PL2303HX - Cablematic
4-port USB to Serial RS232 Converter
4-Port USB to RS-232 Hub - UC2324, ATEN USB Converters | ATEN Corporate Headquarters
StarTech 1' 2 Port 4 Pin USB A Male to RS232 Serial 9 Pin DB9 Male Adapter Cable ICUSB232C2
DIGITUS DA-70159: DIGITUS® USB 2.0 <> 4 x RS232 cable at reichelt elektronik
4-Port USB to RS-232 DB9 Serial Adapter w/ Prolific Chipset
Shop | StarTech.com 4 Port USB to Serial RS232 Adapter - Wall Mount - Din Rail - COM Port Retention - FTDI USB to DB9 RS232 Hub (ICUSB2324I) - serial adapter - USB 2.0 - RS-232 x 4
4 Port Professional RS-232 USB 2.0 to Serial Adapter
4-Port USB to RS232/422/485 Converter DB9 | Black Box
StarTech 4-Port USB to Serial Adapter Hub with COM ICUSB2324X
UGREEN USB to Serial RS232 Cable Adapter 4 Ports DB9 Converter 9-Pin Male to Male with Hexnuts for Windows 10/8.1/8/7/XP/Vista/Linux/MAC OS 8/9/OS X - Newegg.com
USB to 4-Port RS-232 DB9 Serial Interface Adapter - Sealevel
Moxa UPort 2410, USB to 4-port RS232 Converter
4-Port USB to RS232 Adapter FTDI Cable - Coolgear
