Figure 3-5: Replacing The Redundant Power Supply Module; The Single Power Supply Model - Advantech IPC-623 Series User Manual

the currently installed one.
7. Slide the power supply module inward until it locks into the right
position.
8. For the 570 W or 810 W redundant power supply, secure the screw.
9. Return the handle to its original place.
10. Plug in the AC inlet.

Figure 3-5: Replacing the redundant power supply module

3.4.2 The single power supply model

With this configuration, there is only one single 400 W or 500 W ATX
power supply for the system. It is hidden inside the front left section of
the chassis. With only one power supply module installed, an additional
drive bay can be installed three 3.5" HDD next to that power supply. So
it supports up to six HDDs under this hardware configuration.
Please see Figure 3-6.
Replacing the power supply:
1. Unplug the AC inlet from the power supply.
2. Remove the front top cover.
3. Unscrew the power supply bracket and remove it.
4. Unplug the ATX power connector and +12V power connector
from the backplane and the HDD and FDD power connector
from the disk drives.
5. Remove the four screws which mount the power supply to the
power supply bracket, then take out the power supply.
Please see Figure 3-7.
6. Place a new power supply into the power supply bracket and