Not too sure why there are not much talk about the WiFi Link 5100 or 5300 compatibility for Santa Rosa with PM965 chipset, so now, I put it to a test for everyone! Guess what? it works!
the corner by the RAM close to the battery compartment, you will find the old Intel 3945 or 4965 sitting (image shows that the antennas are pulled off, forgot to take a picture of it, but you can just pull them off vertically, but gently)
After you have screwed it in, attach the 2 antennas like it was attached to the old card before, you can just push it on,they are clip on antennas.
Woohoo!! 300Mbps, if you don’t have the full speed, it is ok, sometimes it will lower it when it is not needed, just make sure the “Channel Width” is set to auto in your router (image from my DIR-615 D-Link router)
Also make sure you go into Device Manager (run devmgmt.msc) and under “Network Adapters”, find the card name, double click and go to the “Advanced” tab and change “802.11n Channel Width for band 2.4” and “802.11n Channel Width for band 5.2” both to “Auto”.