The ICUSB2324852 2-port, wall-mountable USB (Universal Serial Bus) Serial Adaptor lets you connect every type of serial device to your USB (Universal Serial Bus)-enabled computer, whether it be for RS232, RS422, or RS485 communication. The Adaptor features a 9-pin (DB9) male & a 5-pin terminal block serial connector as well as dipswitch controls for easy port configuration with minimal software requirements. The Adaptor also supports using 2 ports simultaneously, including with mixed protocols; for example RS-232 on port 1, & RS-485 on port 2, or a number of other combinations. Description For a convenient, & clean installation in an office or industrial setting, the RS232/RS422/RS485 USB (Universal Serial Bus) Adaptor is wall-mountable & fully powered via the host USB (Universal Serial Bus) connection, providing power to the attached serial device without requiring an external power adapter. Product Features Port 1 (DB9) configurable for RS232, RS422, or RS485; Port 2 (Terminal Block) configurable for RS422 or RS485 COM Port assignments maintained after reboot Multiple interface modes, including: 4 wire RS422 (Tx D+/-, Rx D+/-), & 2 wire RS485 (DATA+, DATA-) Both ports can function simultaneously with mixed or matched communication protocols