ocr: Key: vacant position at pin 20 Pin 1 12.70 maximum 3.99 (0.500 maximum 0.157] 0000000000040000000000 00 9000000000000 000000000 : 10.14-0.375 0.399-0.014) Vacant row in Center line of pin 44 50-pin connector 10.24 14.00 (0.403] (0.551] Note: Dimensions are in millimeters (inches).