No, Most motherboards do not include a WLAN chipset.
Cards or USB adapters must be purchased and installed.
Please feel free to PM me for any WLAN help and I'll be happy to assist. Thanks.
I do highly recommend high powered USB adapters if you must have wireless (if your house's layout won't permit or if your landlord won't allow you to run cables) I recommend Amped Wireless! very powerful stuff.
Also avoid getting an older router they have very slow processors. Look for ones that have over 500Mhz processors in them and look for ones that have a high simultaneous connections. Also having your wireless on a non-congested channel will help ... use a tool like InSSIDer or the amped wireless analytics tool on android or airmapper from fluke networks android app. those are great for finding weaknesses in wifi setups.
finally, make sure you have the latest firmware for your router as well as having your security on.
System:Intel i5 3570K @ 3.4Ghz//ASRock Z77 Pro3//Coolemaster Hyper 212 Evo//16GB Corsair XMS3//EVGA Nvidia GTX 650Ti SSC 1GB//128GB Samsung 840 SSD/1.5TB Seagate HDD//Antec Three Hundred Two//620w Antec High Current Gamer HCG-620M//Windows Server 2012 x64 Standard
Misc:Samsung SyncMaster P2350 23in@1920x1080+LG Flatron 19in 1440x900//IoSafe Fireproof ext 500GB HDD//Amped Wireless R20000G high power router//APC BackUPS XS1000 UPS
//RemixedCat's Place Of Meow Blog