how to connect a laptop hard drive to desktop

[firas]

do I have to bring that big cable (looks like a smaller version of the old IDE cable) only?

 

[Sp33dFr33k]

You'll need power and data cable to be able to be able to connect the drive to your desktop. Another option is an external enclosure or drive dock.

 

[peanuthead]

That is a standard SATA power connector next to the data cable.

 

[rive22]

You could also use products like these as well;
http://www.amazon.com/Kingwin-Adapter-Drives-Compatible-ADP-10/dp/B0064VP73O
http://www.amazon.com/Vantec-NexSta...id=1422128159&sr=8-3&keywords=vantec+ssd+5.25
Stay away from anything that isn't USB 3.0 or esata.