Panasonic Toughbook CF-C1ADAAZ6M Reference Manual page 100

Expanding Memory
2
Insert the RAM module parallel to the slot firmly until the gold terminals are invisible.
If it is hard to insert the RAM module, do not try forcibly but check the module's direction.
<CF-C1 Series>
3
Press the RAM module down until the right and left hooks (D) lock into place.
When pressing down the module, the right and left hooks will open slightly and will return after locking.
If it is hard to press down the RAM module, do not try forcibly but check the module's direction.
<CF-C1 Series>
4
Set the cover and battery pack back.
CAUTION
Set the cover correctly and tighten the screw firmly.
NOTE
If it is hard to insert or to press down the RAM module, do not try forcibly but check the module's direction.
Use the appropriate screw driver so as not to strip the thread of screw.
<CF-S10 Series>
<CF-S10 Series>
100