Dell Latitude C840 - Manual (Page 41)

Removing the Memory Modules
1. Remove the memory module/modem cover .
2. To release a memory module from its socket, spread apart the tabs at each side of the module until the module pops up slightly.
3. Lift the memory module out of its socket.
Replacing the Memory Modules
1. If you only have one memory module, install it in the socket labeled "DIMM A." Install a second memory module in the socket labeled "DIMM B."
2. Insert the memory-module edge connector into the socket slot at a 45-degree angle and press the module firmly into the slot.
3. Pivot the module down until it clicks into place. If you do not hear a click, remove the module and reinstall it.
4. Insert the metal tabs on the memory module/modem cover into the bottom case, rotate the cover down, and replace the M2.5 x 20-mm screw.
Modem Daughter Card
Removing the Modem Daughter Card
1. Follow the instructions in " Preparing to Work Inside the Computer ."
2. Turn the computer over and remove the memory module/modem cover .
1 DIMM B
2 memory module sockets
(2)
3 DIMM A socket
4 modem daughter card
5 metal tabs (2 per socket)
NOTE: Memory modules are keyed to fit into their sockets in only one direction.
NOTICE: Disconnect the computer and any attached devices from electrical outlets and remove any installed batteries.
NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer.