Difference between PATA and SATA voltages from the PSU? I May have fried my SSD and Optical Drive

jerubedo

Distinguished
Jun 11, 2012
92
0
18,660
Hi everyone,

So I made kind of a REALLY silly mistake late last night. I'm an experienced builder having built about 30 systems now, but I screwed up here. What happened was I was changing out a PSU in my computer (the Corsair CX600m to the EVGA NEX750G). Everything went seemingly smooth, but when I turned on my system, the optical drive and the SSD were not found by the bios. I shut off the computer and had a look inside again. This is where I found out it all went wrong:

Both the SSD and the Optical drive were connected to the PSU on the same SATA cable, but that cable was plugged into the PSU slot labeled PATA instead of the slot labeled SATA!! I assume that the PATA slot outputs a different voltage than the SATA slot. Can anyone confirm that? Did I toast these drives? They are plugged into the correct SATA slot on the PSU now and are still not being picked up.

I plugged in a backup drive I had lying around to the same cable and same SATA port on the motherboard and it's being picked up just fine, but the other two seem to be toast.
 
Solution
Yeah, PATA is just a more formal term for Molex cables, which are used for the IDE standard and some graphics cards. Sata has a voltage of around 3.3V, while Molex cables have 12V and 5V rails. Yeah a bit of a step up. PSUs really should have different modular sockets to avoid the confusion. It is quite possible your drives are toast :(

Roryiscool

Commendable
Jul 24, 2016
99
0
1,660
Yeah, PATA is just a more formal term for Molex cables, which are used for the IDE standard and some graphics cards. Sata has a voltage of around 3.3V, while Molex cables have 12V and 5V rails. Yeah a bit of a step up. PSUs really should have different modular sockets to avoid the confusion. It is quite possible your drives are toast :(
 
Solution

jerubedo

Distinguished
Jun 11, 2012
92
0
18,660



Thank you for the quick response. I figured :( And yes, I agree that the PSUs should use different modular connectors for every different type of connection!
 

lolgab123

Commendable
Nov 13, 2016
3
0
1,510
Hey, I just made the same mistake!!! My drives seemed to cause my system to often shutdown, till I played wih the cables and plugged them into different "sata" sloths (which at some point appeared to be "pata" labelled sloths...), and now everything seems to work... But is it safe to let my sata SSD and HDD plugged into the pata sloth? Else as soon as i login my computer would crash without any logs nor BSOD.....