Nvidia 400 - Manual (Page 18)

Installation
Page 3-2
Easy Installation Procedure
The following must be completed before powering on your new system:
3-1. CPU Installation
3-2. Jumper Settings
3-3. System Memory Configuration
3-4. Expansion Slots
3-5. Device Connectors
3-1 CPU Installation
CPU Insertion: (use AMD Athlon TM as reference)
Step 1
Open the socket by raising the actuation
lever.
<Figure 2>
Step 2
Insert the processor.
Ensure proper pin 1 orientation by aligning
the FC-PGA corner marking with the
socket corner closest to the actuation arm
tip. The pin field is keyed to prevent mis-
oriented insertion.
Don’t force processor into socket. If it does
not go in easily, check for mis-orientation
and debris.
Make sure the processor is fully inserted
into the socket on all sides.
<Figure 3>