8 Port USB to Serial RS232 Hub - China USB to RS232 RS485 Cable

USB to RS232 Titan adapter of 8 serial ports and DIN rail mounting

USB to RS-232 Adapter (35cm) - UC232A, ATEN Converters

RS232 to USB Adapter Cable, 5-ft

USBPort Multi-port RS232/RS422/RS485 to USB bus isolated gateway

The USB to 8-port RS232 adapter is a USB to Serial adapter designed to make serial port expansion quick and simple. Connecting to a USB port on your computer or USB hub the USB eight port serial adapter instantly adds eight RS-232 serial communication ports to your system. By taking advantage of the USB bus the USB Quad Serial Adapter makes it easier than ever to add serial ports and serial devices to your system with easy plug and-play and hot plug features.

SerialGear 8-Port RS-232 USB to Serial Adapter Data Control Box

Device interface: RS485. Allows to connect RS-485 device to your computer via USB port. Auto sense serial signal rate. Zero delay automatic transmit.

USB2.0 to RS485 DB9 pin Female COM Serial Port Chip PL2303 isolated USB to RS485

Add eight ports supporting three serial protocols, to easily connect serial devices to your computer through USB, with 15kV ESD protection. Add extra COM ports to your laptop or desktop computer, quickly and easily. This USB to RS232/422/485 serial adapter lets you connect to your serial devices through an external USB port.