1.
NVR4 Premium:
If you are installing the CPU on a Premium recorder, remove the mid-plane hard disk
tray.
a. Disconnect the SAS and power cables (PRM only) connected to the mid-plane hard disk tray.
b. Fold the hard drive tray handles up.
c. Use the handles to lift the tray out of the recorder.
d. Remove the black plastic cover that covers the RAM and second CPU slots. Open the RAM
ejectors that are holding the plastic cover and lift it out.
2.
NVR4 Standard:
If you are installing the CPU on a Standard recorder, remove the black cooling
shroud in the middle of the recorder and the butterfly riser slot that is positioned over the second
CPU slot.
a. Use a phillips #2 screwdriver to loosen the screw that is securing the butterfly riser slot.
b. Lift the butterfly riser slot out and set it aside.
c. Hold the cooling shroud by the two tabs marked in blue.
d. Lift the cooling shroud out of the recorder and set it aside.
2. Installing the CPU
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