The BPS AN18S is an RS422/485 card with 16C550-style UARTs, which feature 16-byte transmit and receive buffers to help guard against loss of data in your busy system. The BPS AN18S may be addressed as COM1: to COM4: or any other I/O address you choose from 000 up to 3F8 hex. The BPS AN18S uses one or more standard DB-9 male (9-pin) connectors (video controllers have DB-9 female connectors). All ports are capable of operating at speeds up to 920kbaud simultaneously, making these units ideal for high-speed applications such as ISDN modems.
Need more ports? See our BPS AN16S for an 16-port RS-232/422 version.