Quote:
Originally Posted by chipo
i also have a few Laptop HDD's (2.5") hear, i purchased a an adaptor off of eBay for $8.95, delivered (I'm in Australia)
hooked then up and they just show up as data storage drives when plugged into my iMac. then just scanned them.
i also have one 3.5" hdd hear but it wouldn't even power up so either the plug doesn't work with 3.5 or the hdd is dead. 
ebay.com.au/itm/321472968564?_trksid=p2060353.m2749.l2648&ssPageNa me=STRK%3AMEBIDX%3AIT |
3.5" HDDs require more power than the 2.5" models. You may need to find an adapter that supplies 12v power, which would likely require an external power supply.