Asus RS300-H8-PS12 - Manual (Page 32)

Chapter 2: Hardware setup 2-10
2.4 Hard disk drives (HDDs)
The system allows you to install up to twelve (12) Serial ATA HDDs via four (4) drive trays that
each support three (3) Serial ATA HDDs. Refer to the succeeding steps to install Serial ATA
HDDs:
1. Lift the drive tray handle and squeeze the drive tray lock, then pull the drive tray.
2. Press the metal stopper to release the drive tray then pull the drive tray completely out
of the drive bay.
Use both hands when performing this step.