Toshiba Satellite L30 (PSL33) - Manual (Page 106)

User’s Manual 8-5
Optional Devices
Removing the memory module cover
6. Lift one side of the insulator sheet and fit the module's connectors into
the computer's connectors at about a 45 degree angle. Press the
module carefully to ensure a firm connection.
Memory
Module Cover
Do not touch the connectors on the memory module or on the computer.
Debris on the connectors may cause memory access problems.
You can install the main memory module in either slot.