USB to 4-Port RS-232, RS-485 RJ45 VersaCom Serial Interface, Bus-Powered - Sealevel
4 Port USB to Serial Adapter - USB-B to DB9 RS485 RS422 | Eaton
USB to 4-Port RS-232 DB9 Serial Interface Adapter - Sealevel
4 Port Professional RS-232 USB 2.0 to Serial Adapter
Ftdi Chip 4 Port Usb To Serial Rs232 Db9 Adapter Cable - Pc Hardware Cables & Adapters - AliExpress
USB 4-Port Serial Adapter - USB 2.0 to DB-9 Port RS232 with FTDI CHIP - Coolgear
StarTech.com ICUSB2324 USB to Serial Adapter Hub - 4 Port - Bus Powered - DB9 (9-pin) - USB Serial - FTDI USB to Serial Adapter USB Converters - Newegg.com
4-Port USB-A to Serial DB9 Adapter, Keyspan | Eaton
USB 2 to Industrial 4-Port RS232-422-485 Serial TB Adapter - Coolgear
Large Selection of USB-RS232 adapters, Easy Installation and Setup of USB RS232 COM ports.
4-port USB 2.0 to 4X RS232 serial cable splitter converter ZE552A(FTDI Chipset+win 10 supported)
Amazon.com: StarTech.com 4 Port USB to Serial RS232 Adapter - DB9M - RS232 Extension - Serial to USB (ICUSB2324) : Electronics
4-Port USB to RS232 Adapter FTDI Cable - Coolgear
4 Port USB Type-C To Serial Adapter with Per port LED Rx / TX Indicators
Keyspan USB 4-Port Serial Adapter USA-49WG B&H Photo Video
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
FTDI Serial USB RS232 Adapter 4 port Din Rail Industrial - Shentek
3ft USB to Serial Cable/RS232 Adapter - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com Belgium
Startech 4 Port USB 2.0 to Serial Adapter Hub Black | Techinn
Keyspan USB 4-Port Serial Adapter - serial adapter - 4 ports - USA-49WG
Q Core Medical Sapphire USB to 4-Port RS232 Adapter | Bound Tree
4 Port USB To Serial Adapter with RX/TX Indicators
4-Port USB to RS-232 Serial Adapter Hub
Keyspan USB 4-Port Serial Adapter - Midwest MicroSystems LLC
