Question: Here's an image of my motherboard (from a dell optiplex 740):

![enter image description here](https://i.stack.imgur.com/XcCyy.jpg)
![http://img818.imageshack.us/img818/593/2cak.jpg](https://i.stack.imgur.com/GOspw.jpg)

Will any of these two intel centrino cards fit in here?

* INTEL CENTRINO ADVANCED-N 6235
(=Mini PCIexpress)

![enter image description here](https://i.stack.imgur.com/N40K5.jpg)

* Intel Centrino Advanced-N 6205 for Desktop IEEE
(=PCI Express x1)

![enter image description here](https://i.stack.imgur.com/GgjCa.jpg)

Answer: 
Chromecast acts as an access point when first turned on. 

For the initial setup, you install an app on your Android, Windows or mac device, that will find it and connect to the chromecast's AP directly. Then the chromecast scans for nearby access points, allowing you to pick one and enter in its password. 

Once this is done, it will connect to that access point instead of acting as its own access point.
You can do this from the chromecast app on an android phone (download from the play store). I haven't figured out any way from PC except factory reset (painful - don't do it).