Toshiba Satellite A135-S4407 User Guide 3 - Page 50

50 Getting Started Adding memory (optional) 8 Place the screw and the cover in a safe place so that you can retrieve them later. Static electricity can damage the memory module. Before you handle the module, touch a grounded metal surface to discharge any static electricity you may have built up. Avoid touching the connector on the memory module or on the computer. Grease or dust on the connector may cause memory access problems. 9 Carefully remove the new memory module from its antistatic packaging, without touching its connector. 10 Locate an empty memory module slot on the underside of the computer. NOTE If no memory slot is available, you must remove a module by performing steps 2-3 of "Removing a memory module" on page 53. NOTE If your system has the memory modules stacked on top of one another, you must remove the top module first before removing/installing the bottom module. 11 Pick up the memory module by its sides, avoiding any contact with its connector. Position the module toward the socket, aligning the connector's notch with the matching key in the socket. notch latch connector latch key (Sample Illustration) Aligning the memory module with the socket