Asus RS720-E7/RS12 - Manual (Page 34)

Chapter 2: Hardware setup 2-14
5. Carefully insert the drive tray and
push it all the way to the depth of
the bay until just a small fraction of
the tray edge protrudes.
6. Push the tray lever until it clicks,
and secures the drive tray in place.
The drive tray is correctly placed
when its front edge aligns with the
bay edge.
7. Repeat steps 1 to 6 if you wish to
install other SATA/SAS drive(s).
When installed, the SATA/SAS connector on the drive connects to the SATA/
SAS interface on the backplane.