Disassembly
Disassembly is straightforward. The starting point is to undo the large knob
at the top of the rear panel. Having done that you can slide the top panel a short
distance to the rear, lift it off and put it to one side.
Looking inside you can see metalwork for fitting a 2.5" hard drive and a DVD
drive. This obscures the motherboard and the mSATA flash drive.
Looking at the metalwork you can see that it breaks down into two pieces. The basic
framework for a 5.25" DVD drive (or similar) and a carrier for a 2.5"
hard drive.
Pulling the catch at the rear of the carrier towards the front of the t820 lets
you lift it out of the chassis.
The carrier intended for a 2.5" hard drive removed from the t820.
This just leaves the metalwork support intended to hold a DVD drive or similar.
This is secured by two screws (circled) and a latch (arrowed).
Remove the two screws.
More detail of the latch that has to be lifted before the DVD mounting metalwork
can be slid to the rear and removed.
The carrier intended for a DVD drive out of the chassis.
The motherboard with all the metalwork out of the way.
