Sata power cable

[Gabriel]

For a project I'm modifying a sata powercable for use with 2.5" ssd only so I removed 3.3V and 12V cable to only to keep 5V and ground.

Does it matter which of the two ground cables I keep ?

[momaka]

Re: Sata power cable

Wouldn't the 2.5" SSD work with those voltage still attached? I know the regular 2.5" SATA HDDs have on problems when hooked up to a desktop power supply.

[Gabriel]

Re: Sata power cable

Yes the ssd's would still work but I'm using a meanwell supply with 5V output so I removed the extra cables I don't need.

After googling this I found out it's best to keep the ground cable next to the yellow 12V wire, the drive will always power on and not wait until spoken to.

From wikipedia

If pulled down at the connector (as it is on most cable-style SATA power connectors), the drive spins up as soon as power is applied. If left floating, the drive waits until it is spoken to. This prevents many drives from spinning up simultaneously, which might draw too much power.

[Behemot]

Re: Sata power cable

Never got any problem running 2.5'' drives on desktop. Well, once I got some I/O problems, maybe data cable was seated wrong, but that unit was already bad on sectors.