sparkfun CC3000 Hook-Up Manual page 6

Page 6 of 18
Rotate the capacitor at a 90° angle so that it is connecting the trace coming
out of the CC3000 and the trace going to the U.FL connector.
Attach the RP-SMA to U.FL cable to the U.FL connector. Connect the
2.4GHz antenna (or 2.4GHz large antenna) to the cable.
Note that you can use some Angle Brackets, 4-40 Screws, 4-40 Nuts, and a
piece of drilled (or laser-cut) plastic to hold the antenna onto the CC3000
Shield.
Breakout Board
For the CC3000 Breakout Board, you will need to perform the same
operation as on the shield to rotate the Antenna Select capacitor by 90°.
You may then connect an antenna to the U.FL connector.
CC3000 Library Installation
If you have the Arduino program open, close it now.