This is the Field Link Portable Programmer Air Card from Castle Creations.

FEATURES: Programs Castle air controllers without a computer
          Works as a complete USB Castle Link with your computer
          Works with all Castle Link compatible air products

INCLUDES: One Field Link Portable Programmer Card for flying
          One USB cable

REQUIRES: Windows PC
          Castle Link Software (available at www.castlecreations.com)

SPECS:    Length: 55mm (2.2")
          Width: 85mm (3.3")
          Thickness: 5mm (0.20")

COMMENTS: Will only work with Castle controller firmware released after 2007

                                                                    cnh 1/27/10
                                                                         ir/jxs