Optibay how can they differ besides thickness?

Question

Hard disks

I want to buy Optibay in order to put a hard drive instead of a drive, I would like to know what criteria should be used to look for them? now I know that I need Optibay 9.5mm

Answer 1

one criterion - that climbed into place DVD.

Answer 2

it will be easier to drag it to the master
, of course, with the work of 2-3x from aliexpress / gearbest, but such is the cost of risks