ESD - Electro Static Discharge - Strap

You have most likely experienced discharging electrostatic energy into a door handle or other grounded metal. If you have not it is easy to do, on the next dry day (low humidity) scuff your sneakers on some carpet, then touch something grounded

Even though you may have discharged over 2000 Volts, it did not harm you because the Amps were so low (milliamps), but computers work in the milliamp range, if you discharge 2000 volts into them you will fry the components