Serial USB converter - USB4232 - 3onedata Co.,Ltd.
4-Port USB-A to Serial DB9 Adapter, Keyspan | Eaton
StarTech.com 4 Port USB to Serial RS232 Adapter Hub – Wall Mountable - ICUSB2324I - Serial Adapters - CDW.com
Four-port USB to serial RS232 converter / adapter
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 Industrial USB to RS-232 Serial Adapter Cable
4-port USB to Serial RS232 Converter
StarTech.com USB to RS232/RS485/RS422 Industrial 4 Port Serial Hub Adapter - USB to Serial Converter - ICUSB234854I - USB Adapters - CDW.com
4-Port RS-422 / 485 USB to Serial Adapter - Coolgear
4 Port Serial RS-232 Hub w/ FTDI Chipset & RX/TX LED Indicators
4 Port Professional RS-232 USB 2.0 to Serial Adapter
4 Port Serial - USB Cable - Get Console Shop
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
FTDI CHIP 4 Port USB to Serial RS232 DB9 Adapter Cable | eBay
4 Port Professional RS-232 USB 2.0 to Serial Adapter
4-port Usb 2.0 To 4x Rs232 Serial Cable Splitter Converter Ze552a(ftdi Chipset+win 10 Supported) - Pc Hardware Cables & Adapters - AliExpress
USB 4-Port Serial Adapter - USB 2.0 to DB-9 Port RS232 with FTDI CHIP - Coolgear
USB to 8-Port RS-232, RS-422, RS-485 DB9 Serial Interface Adapter - Sealevel
4-Port USB to RS-232 DB9 Serial Adapter w/ Prolific Chipset
4-Port USB to RS-232 Hub - UC2324, ATEN Converters | ATEN Corporate Headquarters
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
Amazon.com: StarTech.com 4 Port USB to Serial RS232 Adapter - DB9M - RS232 Extension - Serial to USB (ICUSB2324) : Electronics
4 Port USB to Serial Adapter - USB-B to DB9 RS485 RS422 | Eaton
4-Port USB to RS-232 Serial Adapter Hub
4 Port USB to DB9 RS232 Serial Adapter - Serial Cards & Adapters | StarTech.com
4 Port FTDI USB to DB-9 Serial Cable for Win XP/Vista/7/8 and Linux | Cooldrives
4 Port USB to DB9 RS232 Serial Adapter - Serial Cards & Adapters | StarTech.com
USB to 4-Port RS-232 DB9 Serial Interface Adapter - Sealevel
