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KIM-1 connectors: beware the Chinese cheap variants!

The KIM-1 needs 2 edge connectors.

The specifications are: card edge; PIN: 44; 3.96mm

When you search for those, the cheap ones pop up, Chinese made, look good. But they are no good, when you slide them one you need a lot of force, some even use a hammer!
The PCB is too thick for these connectors, you damage the edge fingers and can not change once connected.
DO NOT USE THEM for a KIM-1!

I had some luck, years ago I bough a lot, cable type (solder eyelets) from Conrad and they are perfect for the KIM-1.

307-044-500-202 Standard Card Edge Connectors 44P SOLDER EYELETS 5.08mm ROW SPACE, for sliding on a PCB edge connector.
307-044-520-202 Standard Card Edge Connectors 44P Card Edge PC Tail, for a motherboard

EDAC 307 357 Series Card Edge Connectors English Ordering Guide

307-044-520-202 – EDAC Card Edge Connector

307-044-500-202 – EDAC Card Edge Connector