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4-Port USB to Serial RS232 Hub | TRENDnet - TRENDnet TU-S4
4-Port Industrial USB to RS-232 Serial Adapter Cable
StarTech.com USB to RS232/RS485/RS422 Industrial 4 Port Serial Hub Adapter - USB to Serial Converter - ICUSB234854I - USB Adapters - CDW.com
4-port USB to Serial RS232 Converter
4-Port USB to RS-232 Serial Adapter Hub
Q Core Medical Sapphire USB to 4-Port RS232 Adapter | Bound Tree
4-Port USB DB-9 Serial Adapter Solution for Windows Operating Systems
FTDI CHIP 4 Port USB to Serial RS232 DB9 Adapter Cable | eBay
4 Port USB to DB9 RS232 Serial Adapter - Serial Cards & Adapters | StarTech.com
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
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
USB 4-Port Serial Adapter - USB 2.0 to DB-9 Port RS232 with FTDI CHIP - Coolgear
4 Port Professional RS-232 USB 2.0 to Serial Adapter
USB to 4 PIN Serial RS232 PORT FTDI Chipset Adapter Connector
USB to 4-Port RS-232 DB9 Serial Interface Adapter - Sealevel
4 Port USB Type-C To Serial Adapter with Per port LED Rx / TX
FTDI Serial USB RS232 Adapter 4 port Din Rail Industrial - Shentek
4-Port USB to RS232 Adapter FTDI Cable - Coolgear
FTDI Serial USB RS232 Adapter 4 port Din Rail Industrial - Shentek
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
Four-port USB to serial RS232 converter / adapter
4-Port USB to RS232 Adapter FTDI Cable - Coolgear
Amazon.com: StarTech.com USB to Serial Adapter Hub - 4 Port - Wall Mount - COM Port Retention - Texas Instruments - USB to RS232 Adapter (ICUSB2324X), Black : Everything Else
4-port USB 2.0 to 4X RS232 serial cable splitter converter ZE552A(FTDI Chipset+win 10 supported)
4 Port Professional RS-232 USB 2.0 to Serial Adapter
4 Port Serial RS-232 Hub w/ FTDI Chipset & RX/TX LED Indicators
4 Port Serial RS-232 Hub w/ FTDI Chipset & RX/TX LED Indicators
StarTech 4-Port USB to Serial Adapter Hub with COM ICUSB2324X