Acer ALTOS 1100E - Manual (Page 31)

Chapter 1 – System Housing 1-15
Installing and Removing a BPL3 Hard Disk Drive Tray
To remove and install a BPL3 Hard Disk Drive Tray:
1. Use your finger to release the drive tray and then pull it out.
2. Place a hard disk on the tray. Secure it with four screws as shown below.