HPE ProLiant ML30 Gen10 Plus Maintenance And Service Manual page 128

3. Remove the protective cover from the processor socket.
Retain the cover for future use.
4. Open the processor load plate:
a. Push the hinge lever down to unclip, and then lift it upwards (callout 1).
b. Open the processor load plate (callout 2).
HPE ProLiant ML30 Gen10 Plus Server Maintenance and Service Guide 128