If you are following ss numbering in this guide:
http://forums.benheck.com/viewtopic.php?t=17261
GND = 21, 24, 25, 26, 27, 28, 29, 30, 31, 32
5V = 17, 18, 19, 20
If using the numbering as printed on the board:
GND = 10, 16, 18, 20, 22, 24, 26, 28, 30, 32
5V = 2, 4, 6, 8