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4-Port USB-A to Serial DB9 Adapter, Keyspan | Eaton
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Large Selection of USB-RS232 adapters, Easy Installation and Setup of USB RS232 COM ports.
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4 Port USB Type-C To Serial Adapter with Per port LED Rx / TX Indicators
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Ftdi Chip 4 Port Usb To Serial Rs232 Db9 Adapter Cable - Pc Hardware Cables & Adapters - AliExpress
USB 4 Port Serial DB-9 RS-232 Adapter Box - Prolific Chipset - Coolgear
USB to 4 Port RS-232 Serial Converter, 4x DB9 Male - Lindy Australia
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USB Port To Serial Port Communication, Number Of Ports Pins: 4 Ports, Model Name/Number: USB4485 at Rs 8500/piece in Bengaluru
4-Port USB to RS-232 Serial Adapter Hub
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26479 - USB to 4-Port DB9 Serial RS232 Adapter
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4-Port USB DB-9 Serial Adapter Solution for Windows Operating Systems
USB to 4-Port RS-232 DB9 Serial Interface Adapter - Sealevel
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4 Port Professional RS-232 USB 2.0 to Serial Adapter
Four-port USB to serial RS232 converter / adapter
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