There are 9.5mm, 12.5mm and also 15mm 2.5HDD. 15mm (also known as z-height drives) like the Seagate ST5000LM000 I have, can store up to 5 TB in a 2.5 HDD format. It would be great if the case at least could support one of those HDDs, but for me, is not something mandatory. That just would be a...