Upgrading a wireless card is usually about as easy as upgrading RAM. In fact, on some machines, both the Wi-Fi card and the RAM are located under the same panel.
The trick is to make sure that you install a compatible part. Most laptops that were made a few years ago use Mini PCI cards, while newer ones use the Mini PCI Express standard. The latter type of cards have two separated sets of connectors along the narrower side; Mini PCI cards have only one set.
Even if the card you get has the right connector, it may not automatically work in your laptop: It's unlikely that you can upgrade your old 802.11b card to an 802.11n one (since few 802.11n Mini PCI cards have been made), but it's very likely that you'll be able to find an 802.11a/b/g card that works. Also, many systems that shipped with 802.11g cards can be upgraded to meet the latest 802.11n standard. To avoid firmware incompatibilities, we advise you to get this part directly from the manufacturer of your laptop; in any case, it should be sold specifically for your computer.
If you need to remove the keyboard, follow these steps:
- Remove the laptop's hinge cover by prying up the plastic.
- Detach the keyboard by taking out the two screws beneath the hinge cover that secure it, lifting it off, and then unplugging the connector.
(Reverse these steps to replace the keyboard when the new card is in place.)
Remove the old card by pulling apart the two holding clamps on the card's sides and then pulling the card straight out (photo 3, below). Insert the new card, and reattach the antennas by pushing the connectors straight down on the plugs.
If your wireless card is located on the underside of the machine, flip the notebook over, remove the appropriate panel, and follow the instructions above.