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USB S.O.S. (Short circuit - Over Voltage - Sensor)

Short Circuit Testers for USB ports.

  • For Type-A (PM119) or Type-C Ports (PM219)
  • Quickest and easiest way to check port voltage and short circuit in USB ports and USB chargers.
  • Test over voltage or under voltage on VBUS
  • Check if there is a short circuit between VBUS and any of the data lines
  • Detect invalid voltage on data lines

Protect your USB devices

Protect your expensive USB devices by first plugging in the PassMark USB S.O.S. device to detect bad ports that would otherwise do damage.

The PassMark USB S.O.S. device itself is nearly indestructible for the purposes of testing USB ports with protection of up to +-75V.

The big “PASS” sign is illuminated in green when all voltages are within specification.

USB SOS Type C illumated Pass
Seven individual red LEDs

Diagnose dangerous faulty ports

Seven individual red LEDs are used to indicate failures (out of spec voltages) on:

  • VBUS
  • USB2 Data Lines (D+D-)
  • USB3 Superspeed Pair 1 (SS 1)
  • USB3 Superspeed Pair 2 (SS 2)
  • CC
  • VCONN
  • Sideband Use Pins (SBU)

Compact design

Both the Type-A and Type-C units feature a small and practical design, ideal for convenient, rapid testing. With a test time of under one second per port, they are perfect for fast production line testing of USB ports.

The PassMark USB S.O.S. is a perfect companion to your essential PC repair toolkit, providing quick and reliable USB port verification in the field or on the bench.

compact design