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
BOX DIMENSIONS: 3.63" W. X 1.00" H. X 8.00" L.
BOX WEIGHT: .20 LBS.