User Port edge connector for Commodore 64 and 128 * 44 pins * 2.54 mm pin pitch * Insulator:Glass filled PBT 94v-0, Black * Contacts: Brass or Phosphor Bronze * Plating: Contact Gold plated, Dip Tin plated * Contact resistance: 20 mO max. at DC 100 mA * Insulation resistance: 1000 mO min. at 500V DC * Withstanding Voltage: 1000 V AC/rms 50 Hz for 1 min * Current rating: 2 AMP * Operating temperature: -55 to +105 °C. * Soldering Temperature: 260 °C, 6 s max. (Illustration similar)