Amazon.com: StarTech.com 4 Port USB to Serial RS232 Adapter - Wall Mount - Din Rail - COM Port Retention - FTDI USB to DB9 RS232 Hub (ICUSB2324I) : Electronics
4-Port Industrial USB to RS-232 Serial Adapter Cable
USB 4-Port Serial Adapter - USB 2.0 to DB-9 Port RS232 with FTDI CHIP - Coolgear
4-Port USB DB-9 Serial Adapter Solution for Windows Operating Systems
4 Port Professional RS-232 USB 2.0 to Serial Adapter
4-Port USB to RS-232 DB9 Serial Adapter w/ Prolific Chipset
4-Port USB to RS-232 Serial Adapter Hub
Amazon.com: StarTech.com 4 Port USB to Serial RS232 Adapter - Wall Mount - Din Rail - COM Port Retention - FTDI USB to DB9 RS232 Hub (ICUSB2324I) : Electronics
4 Port USB 2.0 to Serial Adapter Hub - Serial Cards & Adapters | StarTech.com
USB 2 to Industrial 4-Port RS232-422-485 Serial TB Adapter - Coolgear
4 Port USB To Serial Adapter with RX/TX Indicators
4 Port USB to DB9 RS232 Serial Adapter - Serial Cards & Adapters | StarTech.com
4 Port Serial Hub USB to RS232 Adapter - Serial Cards & Adapters | StarTech.com
StarTech.com USB to RS232/RS485/RS422 Industrial 4 Port Serial Hub Adapter - USB to Serial Converter - ICUSB234854I - USB Adapters - CDW.com
4 Port Serial Hub USB to RS232 Adapter - Serial Cards & Adapters | StarTech.com
4-Port RS-422 / 485 USB to Serial Adapter - Coolgear
Four-port USB to serial RS232 converter / adapter
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Amazon.com: StarTech.com 4 Port USB to Serial RS232 Adapter - DB9M - RS232 Extension - Serial to USB (ICUSB2324) : Electronics
Large Selection of USB-RS232 adapters, Easy Installation and Setup of USB RS232 COM ports.
4-Port USB to RS-232 Serial Adapter Hub
4-Port RS-232 USB to Serial Adapter Data Control Box - Coolgear
4-port Usb 2.0 To 4x Rs232 Serial Cable Splitter Converter Ze552a(ftdi Chipset+win 10 Supported) - Pc Hardware Cables & Adapters - AliExpress
4-port USB to Serial RS232 Converter
