Acer Altos G530 Series - Manual (Page 84)

3 System upgrade 74
2 Hold the handle on front of the power supply module while
pressing your thumb on the release latch. Slide the power supply
module into the empty bay until you feel resistance.
3 Press the module handle to secure the power supply module to its
bay.
4 Verify that the power indicators on the main power supply and on
the newly installed redundant power supply are illuminated
green.