Amazon.com: USB 2.0 to 4 Ports Serial RS-232 COM DB9 Male Adapter Cable FT232 USB-4x RS232 : Electronics
Four-port USB to serial RS232 converter / adapter
4-Port USB to RS-232 DB9 Serial Adapter w/ Prolific Chipset
USB to 4 PIN SERIAL RS232 PORT FTDI Chipset Adapter
3ft USB to Serial Cable/RS232 Adapter - Serial Cards & Adapters | Add-on Cards & Peripherals | StarTech.com
4-Port USB to RS232 Adapter FTDI Cable - Coolgear
USB 4-Port Serial Adapter / USB 2.0 Quad Port Serial DB-9 RS-232
4-Port USB to RS232 Converter DB9 | Black Box
Amazon.com: TECHTOO 4 Port Professional FTDI CHIP USB to Serial RS232 DB9 Adapter Converter Serial Cable 9-Pin Male to Male with Thumbscrews (W/Thumbscrews, 4 RS232 Port) : Electronics
4 Port USB 2.0 to Serial Adapter Hub - Serial Cards & Adapters | StarTech.com
Q Core Medical Sapphire USB to 4-Port RS232 Adapter | Bound Tree
USB 4-Port Serial Adapter - USB 2.0 to DB-9 Port RS232 with FTDI CHIP - Coolgear
Large Selection of USB-RS232 adapters, Easy Installation and Setup of USB RS232 COM ports.
StarTech.com USB to Serial Adapter Hub - 4 Port - Bus Powered - DB9 (9-pin) - USB Serial - FTDI USB to Serial Adapter - Add four RS232 serial ports to any
Amazon.com: StarTech.com 4 Port USB to Serial RS232 Adapter - DB9M - RS232 Extension - Serial to USB (ICUSB2324) : Electronics
![CTF4XRS232USB (Automotive/Industry 4-port RS232 USB adapter, FT4232HL, 9-48VDC) [ USB-Hub ]](https://www.cartft.com/image_db/CTF4XRS232USB.jpg "CTF4XRS232USB (Automotive/Industry 4-port RS232 USB adapter, FT4232HL, 9-48VDC) [ USB-Hub ]")
CTF4XRS232USB (Automotive/Industry 4-port RS232 USB adapter, FT4232HL, 9-48VDC) [ USB-Hub ]
StarTech 4-Port USB to Serial Adapter Hub with COM ICUSB2324X
Ftdi Chip 4 Port Usb To Serial Rs232 Db9 Adapter Cable - Pc Hardware Cables & Adapters - AliExpress
4 Port USB to DB9 RS232 Serial Adapter - Serial Cards & Adapters | StarTech.com
4-Port Industrial USB to RS-232 Serial Adapter Cable
UC2324 - 4-Port USB-to -Serial RS-232 Hub
4-Port USB DB-9 Serial Adapter Solution for Windows Operating Systems
SystemBase Multi-4/USB RS232 USB to 4Port RS232 Converter | eBay
4 Port USB Type-C To Serial Adapter with Per port LED Rx / TX Indicators
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
StarTech.com USB to RS232/RS485/RS422 Industrial 4 Port Serial Hub Adapter - USB to Serial Converter - ICUSB234854I - USB Adapters - CDW.com
