Castle Creations brand Field Link Portable Programmer Car Card from Castle Creations. FEATURES: Programs Castle car controllers without a computer Works as a complete USB Castle Link with your computer Works with all Castle Link compatible car products YOU WILL RECEIVE: One Field Link Portable Programmer Card One USB cable REQUIREMENTS: Windows PC Castle Link Software (available at www. castlecreations. com) SPECIFICATIONS: 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