SEALEVEL 7201 Rev H PCI 2-Port RS-232, RS-422, RS-485 Serial Interface Board. The 7201 PCI serial interface provides two serial ports, each individually configurable for RS-232, RS-422, or RS-485. Capable of data rates up to 460.8Kbps and automatically handles RS-485 transmitter enable/disable. It utilizes 16C850 UARTS that provide 128-byte Tx/Rx FIFOs and is Universal Bus (3.3V or 5V) compatible. Communication Chip: 16C850 Electrical Interface: RS-232, RS-422, RS-485 Host Interface: PCI Max Data Distance: 4000 ft. Max Data Rate: 460.8K bps Operating Temps: 0°C to 70°C (32°F to 158°F) PC Bracket: Standard Height Number of Ports: 2 Serial Connectors: DB9M UART Series: 850 UART