Ok so I setup the router to only transmit wireless N and to use WPA2 only.
When setting up WPA you will see the option for either a radius server (Enterprise, and you see this in the corporate environment) or a place to enter a passphrase (Pre Shared Key, PSK).
As long as you use the same options for both, you should be fine. WPA-TKIP or WPA-PSK is typically the names for personal WPA. My problem was not actually answered by the TP-LINK technical support staff.
Select your encryption type from the "Network Authentication" and "Data Encryption" drop downs.
Uncheck "The key is provided for me automatically" and enter and confirm your Network key.
I have a laptop with a Dell D630 with Wi Fi power switch on the side.