Asus Pedestal/5U Rackmount Server TS500-E4 Server - Manual (Page 40)

Chapter 2: Hardware setup 2-18
7. On the front panel assembly, detach the plastic bay cover opposite the
5.25-inch drive that you installed by pressing the two hooked tabs on
each side of the bay cover.
8. Reinstall the front panel assembly when done. Refer to section “2.5.2
Reinstalling the front panel assembly” for instructions.