Acer Altos G5350 Series - Manual (Page 62)

3 System upgrade 52
2 Install a hard disk on the hard disk carrier (1), then secure it with
the four screws that came with the hard disk carrier (2).
3 Insert the new hard disk carrier into the cage with the lever still
extended (1).
4 Make sure that the drive is properly inserted before closing the
lever, then push the lever back until it clicks into place (2). .