StarTech.com 4 Port Wall Mountable USB to Serial Adapter Hub with COM Retention

Wall-mountable Optional DC jack or terminal block power connections Provides dual buffers for upstream and downstream data transfer Designed to make serial port expansion quick and easy COM port settings are retained for serial devices plugged into different USB ports and across reboot 4-port USB to RS232 serial adapter Rugged metal construction Powered by an available USB port - no external power adapter required Baud Rate up to 230 Kbps Supports automatic handshake mode