The B64290P37X87 is a DC-DC converter from TDK's B6 and C6 PowerBlock series. This particular unit produces an output voltage of 5V at an input voltage of either 36, 72, or 110 Volts DC. It offers a wide range of features, including an internal fan for cooling, an alarm output for monitoring system performance, and a remote on/off control for controlling power usage. The power supply has an MTBF of 100,000 hours at full load, is RoHS compliant, and comes with a 5-year warranty.