Supermicro X10DRT-L User Manual page 31

4. Use your thumb and index finger to loosen the lever and open the load plate.
5. Using your thumb and index finger, hold the CPU by its edges. Align the CPU
keys, which are semicircle notches, 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 or move the CPU horizontally or vertically.
Do not rub the CPU against the surface or against any of the socket pins 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 as this may damage your CPU.
Instead, open the load plate again to
make sure that the CPU is aligned
properly.