Why is there a hole and why am I not allowed to cover it? : r/pcmasterrace
What is the purpose of the holes marked "Do Not Cover" on hard drives? - Super User
On a hard drive, what does it mean when it says “do not cover this hole”? - Quora
Amazon.com: MaxDigitalData 1TB PS4 Hard Drive Upgrade Kit Bundle with Toshiba 1TB 5400RPM 128MB Cache SATA 6Gbs 2.5in Internal Hard Drive (Works for PS4 Game Console) (MQ04ABF100PS) : Electronics