Here are some of the numbers I have collected from the list: Penelope: Prototype draws 300mA of +5 Mercury: Prototype draws 500mA of +5 and 200mA of +12 Janus/Ozy: Measured at 180mA of +5, 200mA of +12, 70mA of -12. At this point, it looks like nobody is using the 3.3V rail or the -5V rail. /mike 1183388251.0