Hi
I'm going to upgrade the memory on my eMachines e527 laptop from 160 GB to 320 GB.

I couldnt find any information or service manual that stated which 320 GB memorys that work with my computer.
I found a service manual for the eMachines e627 computer, where it uses either the WD1600BEVT or the WD3200BEVT hdd's:
http://tim.id.au/laptops/acer/emachines e627.pdf
So it seems more logical to use the WD3200BEVT than the WD3200BEVS?
Often it looks like the WD3200BEVT hdd's
dont have metal lids. Can I use the cover from the
WD1600BEVT hdd and move it to the WD3200BEVT?
Also, the more
specific part numbers following the BEVT/BEVS part, i.e. the 22A23TO
part of the WD1600BEVT -22A23TO, is it relevant, i.e. does the
WD3200BEVT or WD3200BEVS also have to have the same last part serial
number?
So which hdd's, 320 GB will work with the eMachines e527? Is there any difference between the WD3200BEVT and BEVS hdd's?