>Setup: RAQ2, NetBSD 5.0, 256 mb of memory, 2.5" drive, no fan. >Observation: when the fan is connected, no problems occur whatsoever.The 12 volt supply needs a minimum load. Normally, the 3.5 inch disk drive meets the requirement.
However, the 2.5 inch drive uses 5 V only. So, no load on 12 volt supply. djb