Toshiba Satellite A55 - Manual (Page 35)

35 Setting up your computer and getting started
10 Insert the memory module into the socket on the
underside of the computer.
Sample inserting the sample memory module into the slot
11 Hold the memory module by its edges so that the gold
connector bar faces the slot, at a slight angle to the
socket.
Sample inserting the memory module into the socket
12 Check that the module is lined up with the socket clips.
Sample aligning the module in the socket
clip
clip