A card edge connector includes a slot for receipt of a circuit board or a circuit card, a first eject lever in a first side of said slot, and a second eject lever in a second side of said slot. Activation heads of the first and second eject levers are `L`-shaped and `R`-shaped, respectively, for indicating...http://www.google.com/patents/US6123558?utm_source=gb-gplus-sharePatent US6123558 - Card edge connector with insertion direction indicators
