ASROCK Z77 Pro4 Quick Installation Manual page 15

Step 3. Insert the 1155-Pin CPU:
Step 3-1. Hold the CPU by the edge which is
marked with a black line.
Step 3-2. Orient the CPU with the IHS (Inte-
grated Heat Sink) up. Locate Pin1
and the two orientation key notches.
orientation key notch
Pin1
orientation key notch
For proper inserting, please ensure to match the two orientation key
notches of the CPU with the two alignment keys of the socket.
Step 3-3. Carefully place the CPU into the
socket by using a purely vertical mo-
tion.
Step 3-4. Verify that the CPU is within the sock-
et and properly mated to the orient
keys.
Step 4. Close the socket:
Step 4-1. Flip the load plate onto the IHS.
Step 4-2. Press down the load lever, and se-
cure it with the load plate tab under
the retention tab.
1155-Pin CPU
ASRock Z77 Pro4 Motherboard
alignment key
Pin1
alignment key
1155-Pin Socket
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