I've been using these for several years. The "legged" versions have a fairly large footprint, but are good for debug. The legless versions need to be held in place, but work well for production programming. The clips to hold the legless version in place are marginal and VERY easy to lose. I've thought about undersizing the holes for the alignment pins a bit so the board would hold the alignment pins securely, but I have not done that. Most of my stuff has holes for the legs. A couple products don't have room though, so I lost a bunch of retaining clips while debugging. Harold --=20 FCC Rules Updated Daily at http://www.hallikainen.com Not sent from an iPhone. --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .