question about the hdd in my desktop

sata is sata whether the disk is 2.5" or 3.5" form factor,. the cables are no different. power and data are always separate cables.

 

It should, but make sure you know which USB you have on the target device, i.e. 2.0 or 3.0, etc. as it could effect performance.

 

it will need power from a separate source.

 

If he buys a "cable set", it should already be provided.

 

Actually Loonylion was suggesting you buy a set that has external power source, like this set:

But then again, it depends on the purpose. If just to transfer data, what you've chosen should suffice.

 

that won't work on a 3.5" (desktop) drive, it won't be able to supply enough power.

 

That's true it won't, because what he chooses was labelled for SATA 2.5" HDD.

 

labelling doesn't matter, its the fact it draws its power from USB which cant provide enough for a 3.5" hard disk.

 

Let's see if I get this right;
A 2.5" HDD requires 5Watt to run which is what a USB 2.0 delivers.
A 3.5" HDD requires 5Watt to start up but needs an additional 12-14Watt to actually run.

But I think if one of the cables is a FireWire which can deliver 45Watt (for power supply) and a USB 2.0 (for data transfer), it should suffice just as well. Then again that is if his hardware (pc/laptop) got a FireWire port on it, else no point talking about it.

Ultimately, up to now we don't actually know if Neon32 intent to use that cable for a 2.5" or 3.5". If for the later, then yes, it won't suffice.

 

USB is 5v 500mA for a data cable or 1A for power only.

neither of the cables is firewire, and laptop firewire ports dont usually carry power anyway. (4pin doesn't carry power, 6 pin does)

 

The one he chooses doesn't have FireWire, it's only USB 3.0 and 2.0. That should deliver 10V right? That should be enough for a 2.5" SATA HDD data transfer. Of cause heavy duty tasks will be a no go without extra juice.

 

no its still only 5V, just potentially up to 1.5A