what is the back of hdd....how to use it///?

Answer 1

The back of the Hard Disk Drive (HDD) is the part furtherest from the from.
You can use it to stand the HDD upright on a table (if you really wanted to).
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Answer 2

Procedure Steps:

1. Attach Power Cable: Attach one of the power-supply power connectors to the drive. It may take a little bit of force to get one of the standard, large four-wire connectors into the drive; you may have to wiggle the connector a bit to get it in. The connector is keyed, so it can only go in one way.
2. Attach Interface Cable: Attach the IDE interface cable to the drive. Make sure to line up pin 1 of the connector with pin 1 of the motherboard, by attaching the cable so that the red wire on one edge of the ribbon cable connects to pin 1 of each device. On some drives it can be hard to figure out which end of the header is pin 1, which is why I recommend that you examine the drive before physically installing it. IDE connectors and cables are not keyed, so you can easily connect the drive backwards if you are not careful. Choose one of the following depending on whether the channel you are going to connect to has a device on it already:
* First Device on Channel: Simply attach one end of the cable to the drive, and the other end to the controller or motherboard. Easy as pi (not pie! :^) ).
* Second Device on Channel: Examine the cable that is currently connecting the first device on the channel; it should have a third, unused connector, but some cables only have two connectors on them. If the cable has a third connector, attach this to the drive you are installing. If you need to switch which connector goes to which drive so that the cables will reach both drives, you can do this, as it really doesn't matter for standard setups which drive takes which connector. If the cable only has two connectors, you will need a new cable with three connectors (available at most any decent computer store).
3. Double-Check Connections: Check over the connections you just made to ensure that they are correct. Make sure you haven't accidentally loosened anything. For example, if there was already a device on the channel when you attached this drive, make sure you have not pulled the cable loose by mistake (which is common, because the connectors don't fit very tightly on many systems).

Answer 3

http://www.buildeasypc.com/hw/howto/insthdd.htm
The back of the HDD, has the Power In and IDE or whatever cables that will allow it to talk to the Mobo.

Answer 4

it is a hard disk. connect the power line and the date line then you can use it.