USB 4-Port Serial Adapter / USB 2.0 Quad Port Serial DB-9 RS-232
Moxa UPort 2410, USB to 4-port RS232 Converter
Amazon.com: DriverGenius 4XRS232, 4 Port USB to DB9 RS232 Serial Adapter Converter with 12 X LEDs - Win11 & Mac (M/M, Metal) : Electronics
4-Port USB to RS-232 DB9 Serial Adapter w/ Prolific Chipset
CableCreation USB to Serial 10ft Long Cable , USB to RS232 Adapter, USB to DB9, RS232 Converter 9-Pin FTDI Chipset for Windows , Mac OS and Linux - Walmart.com
4 Port Professional RS-232 USB 2.0 to Serial Adapter
4 Port Serial Hub USB to RS232 Adapter - Serial Cards & Adapters | StarTech.com
4 Port USB to DB9 RS232 Serial Adapter - Serial Cards & Adapters | StarTech.com
FTDI Serial USB RS232 Adapter 4 port Din Rail Industrial - Shentek
USB 4-Port Serial Adapter - USB 2.0 to DB-9 Port RS232 with FTDI CHIP - 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
USB 2 to Industrial 4-Port RS232-422-485 Serial TB Adapter - Coolgear
Four-port USB to serial RS232 converter / adapter
Industrial USB to 4 Port RS232 Converter / Adapter
4-Port RS-422 / 485 USB to Serial Adapter - Coolgear
Amazon.com: StarTech.com 4 Port USB to Serial RS232 Adapter - DB9M - RS232 Extension - Serial to USB (ICUSB2324) : Electronics
4-Port USB to RS232 Converter DB9 | Black Box
4 Port Professional RS-232 USB 2.0 to Serial Adapter
4-Port USB DB-9 Serial Adapter Solution - Coolgear
4-Port USB DB-9 Serial Adapter Solution for Windows Operating Systems
Amazon.com: DTech 4 Port USB to Serial RS232 Adapter Cable 4ft with FTDI Chip FT232 Compatible with Windows 11 10 8 7 XP Mac Linux for Multiple RS-232 Devices Raspberry Pi Switch Router Modem : Electronics
4-Port USB to RS-232 Serial Adapter Hub
FTDI Serial USB RS232 Adapter 4 port Din Rail Industrial - Shentek
4 Port Serial Hub USB to RS232 Adapter - Serial Cards & Adapters | StarTech.com
