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Jan 15, 2019 at 4:14 comment added Bja I highly doubt that a laptop will still provide 12V to an internal 2.5" SATA drive when all SATA 2.5" drives (including 2.5" SSD) all use 5V and not 12V. There is no reason to have extra circuitry and drain on the battery when nothing is going to use it.
Jan 14, 2019 at 16:24 comment added Bja @LPChip I previously tried to connect a 3.5" SATA drive to my laptop (HP Probook 6550B) through a SATA extension cable and it would not work. I had to modify the extension cable to connect an external PSU. (Full info in my post below).
Feb 7, 2018 at 13:58 vote accept James Russell
Feb 6, 2018 at 19:01 comment added LPChip A laptop will still power 12 volts to the drive, similarly to a PSU in a PC, so it doesn't matter. Yes, the drive won't fit, but OP may simply just want to quickly test a laptop suspecting a faulty drive and swapping it for a 3.5" drive just once leaving it outside of the laptop during testing.
Feb 6, 2018 at 18:51 comment added Hennes Yes, that would just work. But a PSU might not be entirely trivial, e.g. a regular PC PSU will not power on unless there is enough load. And it might be so much easier to use an external dock with a eSATA or USB port.
Feb 6, 2018 at 18:20 comment added user772515 Yes, the connectors are the same and it should work. The problem, however, is using it instead of a 2.5" drive in a laptop (won't fit). So, I think, the main question is can it be used externally with a standard desktop SATA (data) cable and an external power supply?
Feb 6, 2018 at 17:57 history answered LPChip CC BY-SA 3.0