I have the following setup:

Dell 2350 router (yes, very old router but works, ;) ) is serving my wifi needs.  it serves WPA-PSK AES/TKIP security connection TL-WN881ND is installed on my pc and has been working awesomely on many networks.  

Surprisingly, I can not seem to connect to Dell router's wifi network using TL-WN881ND. 

Initially I thought it must be Dell since it is so old.  But then all of my other gadgets connect to it just fine including cell phones.  Hence I think there is some config that I will need to do  on TL-WN881ND.

This is what I get from Dell's router when using TL-WN881ND:

                         connection

No security       yes

WEP                 yes

WPA-AES         no

WPA-TKIP        no

All of my other devices establish a connection with any of the above security options.  

I thought that perhaps TL-WN881ND does not support the WPA standard.  But the specs say there is support for WEP, WPA (TKIP/AES)  and WPA2.

Anyone know what I need to configure to get my TL-WN881ND connect to Dell's 2350 router?  

Thanks!