Best edge connector for my pcb?

What Is Edge Connector Bevelling? pcb slot connector Card Edge Connector Slot mm Pitch 20 Pin 2x10 Position PCB Gold Finger Board Socket Through Holes Dual Row Straight, You can get more details about pcb slot First thing that comes to mind is using the old floppy connectors or an ISA slot or even PCI What should I keep in mind when designing this on

fun slot app It is similar to the 60 pin connector the original IBM PC used I've searched the forum for apple ii, edge