Add two RS232 serial port to your system using an available USB motherboard header

The USB to RS232 Serial Adapter lets you add an RS232 port to any desktop system that is equipped with an available USB motherboard header.
Unlike standard USB to serial cables, this cable is designed for use inside the PC case, affording an entirely internal solution with no mess or extra adapters needed.
This compact and simple USB adapter offers a cost-effective solution that bridges the compatibility gap between modern computers and legacy serial peripherals.
Features
Supports COM port retention
Bus-Powered – no separate power supply or battery required
Single chip USB to asynchronous serial data transfer interface
UHCI/OHCI/EHCI host controller compatible
USB 2.0 Full Speed compatible
Synchronous and asynchronous bit bang interface options with RD# and WR# strobes
FIFO receive and transmit buffers for high data throughput.

Perfect for system builders looking to add legacy functionality to newer motherboards that lack an integrated RS232 port