Gateway E1400 System Manual page 50

7
Expand the tray until it fits the size of your drive, then lower the drive
into the tray. Release the tray so it can contract to secure the drive.
8
Align the drive tray rails with the side channels in the hard drive cage,
then slide the drive tray into the hard drive cage.
Drive tray rails
Adding an additional hard drive
Hard drive
43