4 Port USB Type A Male to Serial Adapter Hub
StarTech.com USB to Serial Adapter Hub 4 Port Industrial Wall Mount Din Rail COM Port Retention FTDI USB Serial - Office Depot
FTDI Serial USB RS232 Adapter 4 port Din Rail Industrial - Shentek
4-Port RS-232 USB to Serial Adapter Data Control Box - Coolgear
4-port USB to Serial RS232 Converter
UC2324 - 4-Port USB-to -Serial RS-232 Hub
PROVANTAGE: StarTech.com ICUSB2324 4 Port USB to Serial RS232 Adapter Hub - DB89
4 Port Professional RS-232 USB 2.0 to Serial Adapter
4 Port USB To Serial Adapter with RX/TX Indicators
4-Port USB to RS-232 Hub - UC2324, ATEN Converters | ATEN U.S.A.
4-Port USB to RS232 Adapter FTDI Cable - Coolgear
4 Port USB to Serial Adapter - USB-B to DB9 RS485 RS422 | Eaton
4 Port USB to RS232 Serial Adapter Hub - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com Europe
4-Port RS-422 / 485 USB to Serial Adapter - Coolgear
StarTech 4-Port USB to Serial Adapter Hub with COM ICUSB2324X
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
Shop | 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
FTDI CHIP 4 Port USB to Serial RS232 DB9 Adapter Cable | eBay
Tripp Lite Keyspan High Speed 4 Port USB to DB9 Serial Adapter Hub - serial adapter - USB - RS-232 x 4 - USA-49WG - USB Adapters - CDW.com
USB to 4-Port RS-232 RJ45 Serial Interface, Bus-Powered - Sealevel
4-Port USB to RS-232 Hub - UC2324, ATEN Converters | ATEN U.S.A.
Four-port USB to serial RS232 converter / adapter
4 Port Serial - USB Cable - Get Console Shop
Large Selection of USB-RS232 adapters, Easy Installation and Setup of USB RS232 COM ports.
USB to 4-Port RS-232 DB9 Serial Interface Adapter - Sealevel
4-Port USB to RS-232 Serial Adapter Hub
4 Port Professional RS-232 USB 2.0 to Serial Adapter w/Nuts
