SIIG 2-port Serial Hub

SIIG's 2-Port Industrial USB to RS-232 Serial Adapter Hub is a professional grade USB plug-and-play adapter hub designed to add two high speed RS-232 serial ports to desktop or notebook computers. This professional grade USB to serial adapter hub supports USB 2.0 data transfer rates up to 480Mb/s and serial port data transfer rates up to 921.6Kb/s. It features built-in 512 byte FIFO buffers, software flow control, 15KV DC ESD serial interface protection, and is powered by USB bus for low power consumption, no external power adapter is needed.