FTDI Serial USB RS232 Adapter 4 port Din Rail Industrial - Shentek
4 Port USB Type-C To Serial Adapter with Per port LED Rx / TX Indicators
4-Port USB to RS-232 DB9 Serial Adapter w/ Prolific Chipset
4-Port Industrial USB to RS-232 Serial Adapter Cable
USB to 4-PIN Serial RS232 PORT FTDI Chipset Adapter Connector | eBay
USB 4-Port Serial Adapter - USB 2.0 to DB-9 Port RS232 with FTDI CHIP - Coolgear
USB to 4-Port RS-232 RJ45 Serial Interface, Bus-Powered - Sealevel
4 Port Professional RS-232 USB 2.0 to Serial Adapter w/Nuts
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) : Everything Else
Amazon.com: StarTech.com 4 Port USB to Serial RS232 Adapter - DB9M - RS232 Extension - Serial to USB (ICUSB2324) : Electronics
StarTech.com ICUSB2324 USB to Serial Adapter Hub - 4 Port - Bus Powered - DB9 (9-pin) - USB Serial - FTDI USB to Serial Adapter - Newegg.com
4-Port USB-A to Serial DB9 Adapter, Keyspan | Eaton
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 2.0 to Serial Adapter Hub - 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
Large Selection of USB-RS232 adapters, Easy Installation and Setup of USB RS232 COM ports.
Amazon.com: USB 2.0 to 4 Ports Serial RS-232 COM DB9 Male Adapter Cable FT232 USB-4x RS232 : Electronics
4-Port USB to RS232 Adapter FTDI Cable - Coolgear
Description - USB SER 4
1 Port USB 2.0 to Serial Adapter Cable - Serial Cards & Adapters | StarTech.com
4-Port USB to RS-232 Serial Adapter Hub
4 Port Professional RS-232 USB 2.0 to Serial Adapter
4 Port Professional RS-232 USB 2.0 to Serial Adapter
