The Depot International RF5-3338-AFT DPI HP 9000/5500 FD/SPRTN/PCKP RLR is a high performance, low latency, serial port adapter that provides a high-speed connection between serial devices and serial ports on HP 9000 and HP 5500 systems. The adapter supports both asynchronous and synchronous serial communication modes and provides a data rate of up to 33.8 Kbps in asynchronous mode and up to 55.2 Kbps in synchronous mode. The adapter also supports packet-based communication, which allows data to be transferred in smaller, more efficient packets.