16 channels of high performance RS232 serial interface; Programmable baud rates up to 921.6 Kbaud; Support of RxD, TxD, RTS, CTS, GND per channel; 64 byte receive FIFO and 64 byte transmit FIFO per channel, programmable trigger levels for FIFO's; all signals on HD68 SCSI-3 type connector in front panel ; 3.3V on PCI connector required; Operating temperature 0°C to +70°C