For access, remove these FRUs in order:

• Battery pack
• Optical drive or travel cover
• Fan assembly
• Wireless WAN slot cover and PCI Express Mini Card for wireless WAN
• Palm rest assembly with cables
• PCI Express Mini Card for wireless LAN
• Keyboard

Note: Steps [2a] and [3a] are only for ThinkPad SL510 and L510. For ThinkPad SL410 and L410, skip steps [2a] and [3a].

Please perform the following step as shown in the picture below.

When installing: Make sure that the connectors are attached firmly to the system board.