QDI PlatiniX 4N Series Manual page 6

Note:
This manual is suitable for mainboards of PlatiniX 4N series.
Each mainboard is carefully designed for the PC user who
wants diverse features.
P4N: without onboard Audio and onboard LAN
P4N-A: with onboard Audio
P4N-L: with onboard LAN
P4N-AL:with onboard Audio and onboard LAN
Caution
Be sure to add some Silicone Grease between the CPU and the heatsink
of FAN to keep them fully contact , meanwhile to meet the heat sink
requirement.