The PCjr in question with the expanded memory is only counting up to 128 when it POSTs, so I am pretty sure that the expanded memory isn't getting any power at all. If the memory would appear during the POST, my life would be wonderful. My other extended PCjrs POST past 128KB. So are there any Rapport Drive II owners out there that want to tell me what the external power supply looks like? Does it output the same as the PCjr power brick, or is it a different beast? The Rapport looks like a pretty neat device. The standard PCjr diskette controller can only support one drive. They use the standard controller, but they "borrow" some of the lines on the floppy cable and run it through some additional logic to add two drive support. It also looks like it has a parallel port and a clock/calendar on it. It's also got a switch labelled "PC/PCjr" - it either disables all of the addon crap, or it adds a feature that I'm unaware of. Any guesses? Mike