HP9836C colour alignment (grey scale tracking)

What's the difference between an "edge connector" and, say, the connector used for a PCI card or a modern peecee memory stick? (Tony, I realize you may not be familiar with either one, but just wander into a mass-market computer store and I'm sure you can find plenty of each, probably with some examples in see-through packages.) The only difference I can see is how the "socket" side of the connection is usually mounted (so the socket and board edge mate perpendicular to the baord the socket is connected to, rather than parallel). Oh, and the size of the contact fingers, I suppose, but _that_ surely doesn't count! /~\ The ASCII Mouse \ / Ribbon Campaign X Against HTML mouse at rodents-montreal.org / \ Email! 7D C8 61 52 5D E7 2D 39 4E F1 31 3E E8 B3 27 4B