StarTech 4-Port USB to Serial Adapter Hub with COM ICUSB2324X
4-Port USB to RS-232 Serial Adapter Hub
4-Port USB to RS-232 Hub - UC2324, ATEN Converters | ATEN Corporate Headquarters
4-Port USB to RS-232 Hub - UC2324, ATEN Converters | ATEN Corporate Headquarters
4 Port USB Type-C To Serial Adapter with Per port LED Rx / TX
4-Port RS-422 / 485 USB to Serial Adapter - Coolgear
4 Port USB 2.0 to Serial Adapter Hub - Serial Cards & Adapters | StarTech.com
4-Port USB to RS-232 Serial Adapter Hub
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 USB DB-9 Serial Adapter Solution for Windows Operating Systems
4 Port USB to Serial Adapter - USB-B to DB9 RS485 RS422 | Eaton
4-Port USB to RS232 Adapter FTDI Cable - Coolgear
4-Port USB-A to Serial DB9 Adapter, Keyspan | Eaton
USB to 4 Port RS232 DB9 9 Pin COM Serial Adapter Converter
4 Port Professional RS-232 USB 2.0 to Serial Adapter
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.ca
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 Quad Port Serial DB-9 RS-232
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
Rugged USB to 4-Port RS-232, RS-422, RS-485 Software Configurable Serial Interface Adapter - Sealevel
4 Port USB to RS232 Serial Adapter Hub - Serial Cards & Adapters | StarTech.com Canada
4-Port USB to RS-232 DB9 Serial Adapter w/ Prolific Chipset
UGREEN USB-A 2.0 To 4 Serial DB9 RS-232 Male Adapter Cable - UGREEN Indonesia Official