Gateway ALR 9250R User Manual page 61

With the tabs at the top of the SEC cartridge completely open (pulled
12.
outward, away from the center of the cartridge), slide the cartridge into
the guide rails of the retention module. The triangular ends of the tabs
fit into the entrance to the guide rails. See the illustration Installing a
New Processor below.
When the cartridge meets resistance, push the two tabs toward each
13.
other until the processor is fully seated. See the illustration Installing a
New Processor above.
Installing a New Processor
Chapter 3: Components 47