Supermicro X10DDW-i User Manual page 31

4. Use your thumb and the index finger to loosen the lever and open the load
plate.
5. Using your thumb and index finger, hold the CPU on its edges. Align the CPU
keys, which are semi-circle cutouts, against the socket keys.
6. Once they are aligned, carefully lower the CPU straight down into the socket.
(Do not drop the CPU on the socket. Do not move the CPU horizontally or
vertically. Do not rub the CPU against the surface or against any pins of the
socket to avoid damaging the CPU or the socket.)
Socket Keys
2-9
Chapter 2: Installation
CPU Keys
Warning: You can only install the CPU
inside the socket in one direction. Make
sure that it is properly inserted into the
CPU socket before closing the load
plate. If it doesn't close properly, do
not force it into the socket as it may
damage your CPU. Instead, open the
load plate again to make sure that the
CPU is aligned properly.