Tokina AT-X 124 PRO 12-24mm F/4.0 DX AF Lens For Nikon?

Does the Tokina AT-X 124 PRO 12-24mm F/4.0 DX AF Lens have a auto focus motor included? I'm looking to use it on a d5100

Added (1). I'm looking at the dx not the dxll, i can't find current info from tokina's website on the older dx

Yes

"The Nikon mount AT-X 124 PRO DX II features a built-in AF motor drive that operates smoothly and quietly due to a DC motor that uses a new AF control gear assembly" -- http://www.photographyblog.com

Or you could look on the Tokina website for that information

http://www.tokinalens.com/tokina/products/atxpro/atx124afprodxii/

The DX version does NOT have an internal focusing motor. This lens was replaced in 2009 with the DXII.

In Tokina lingo, a DX lens is equivalent to a Nikon AF lens (no internal focus motor), and a DXII lens is equivalent to an AF-S lens (with internal focus motor).

AT-X 124 DXII:

http://www.thkphoto.com/products/tokina/atx124prodx2-a.html

AT-X 124 DX:

http://www.thkphoto.com/products/tokina/afl-00.html