HowToCleanEdgeConnectors


 * Observe anti-static precautions
 * Don't set fire to yourself
 * Don't blame me if you break stuff
 * Wear suitable gloves, avoid inhaling solvents, use appropriate ventilation etc.
 * Clean edge-connectors with a cotton-bud (cue-tip) dipped in isopropyl alcohol ("IPA"/Isopropanol)
 * Clean DIMM/PCI slots using a stiff piece of card (the same thickness at the DIMM/PCI PCB), wetted with isopropyl

Isopropanol is available from many chemists/pharmacists.

You can also buy commercial connector, and PCB cleaning solutions and devices.