6 pin female connector 2x3 2.54mm for JP1 cables

[mdavej]

EDIT: I no longer have these for sale myself. But here is one source I found on ebay ($5.49 shipped):
http://www.ebay.com/itm/Lost-of-50pcs-D ... 0821314510

[The Robman]

Here are a couple of cheaper listings:

40 pieces for $3.95 shipped:
https://www.ebay.com/itm/263051820184

100 pieces for $4.33 shipped:
https://www.ebay.com/itm/232468305146

But be aware that shipping time from Hong Kong to the USA is 11-23 days