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4 Port Professional RS-232 USB 2.0 to Serial Adapter
4-Port Industrial USB to RS-232 Serial Adapter Cable
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4-Port USB to RS-232 Serial Adapter Hub
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6ft. USB 4-Port Serial Adapter / USB 2.0 Quad Port Serial DB-9 RS-232
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4 Port USB to DB9 RS232 Serial Adapter - Serial Cards & Adapters
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4 Port Serial Hub USB to RS232 Adapter - Serial Cards & Adapters
4 Port FTDI USB to DB-9 Serial Cable for Win XP/Vista/7/8 and Linux | Cooldrives
4-Port USB to RS-232 Serial DB9 Adapter Cable w/ FTDI Chip
![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 ]
Ftdi Chip 4 Port Usb To Serial Rs232 Db9 Adapter Cable - Pc Hardware Cables & Adapters - AliExpress
StarTech 4-Port USB to Serial Adapter Hub with COM ICUSB2324X
