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4. Correctly orient the power supply with the power supply slot (use the letters on the power supply
faceplate for orientation), grasp the handle of the power supply with one hand and support its
bottom with the other, and slide the power supply slowly along the guide rails into the slot until
you hear that the latch of the power supply clicks into the slot.
When you insert the power supply into the slot, you can do that through slight inertia so that the
terminals of the power supply can have good contact with the backplane.
The PSR1110-56A (JG544A) power supply adds 64 mm (2.52 in) to the depth of the switch, as
shown in Figure 27.
5. Install the filler panel over the empty power supply slot to prevent dust and ensure good
ventilation if you install only one power supply.
Figure 27 PSR1110-56A (JG545A) in the chassis
Removing a PSR720-56A/PSR1110-56A (JG544A/JG545A)
power supply
1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
2. Disconnect the power cord.
3. Press the latch towards the handle, and pull the power supply along the guide rails until it is
part-way out.
4. Grasp the handle of the power supply with one hand, support the bottom with the other hand,
and pull the power supply slowly along the guide rails out of the slot.
Put away the removed power supply in an antistatic bag or the power supply package bag for
future use.
5. Install the filler panel to prevent dust and ensure good ventilation if no power supply is installed
in the slot.
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