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Measures, tests and monitors the voltage and amp capacity of your computer or laptop’s USB ports and any connected USB devices.
  • Tester works with any USB-A cable, charger or port on your PC, laptop or tablet
  • Monitor cable or charger in real time while simultaneously charging a USB-A device
  • Easy-to-read digital display switches between voltage and amperage information
  • Dual color LEDs indicate whether voltage or current is being displayed on screen
  • Ideal for fast-testing devices/cables at a remote workspace, conference or trade show
  • 3-year limited warranty


Determine Volt and Amp Capacity of Your USB-A Cable, Charger or Port in Real Time
You need to know when your USB devices are receiving an acceptable and proper charge. You also need to know the power requirements of your PC, laptop, tablet, MacBook, Ultrabook or Chromebook, so you can determine which USB cables, hubs and chargers work most efficiently with them. This USB-A voltage/current tester connects between the USB source you wish to test and a connected USB device to determine the voltage and amperage.
An Ideal Tool for Immediate Troubleshooting
You’ll be able to quickly and accurately detect defective USB cables, chargers and ports in your various devices at home or on the go. Recommended for use with multiport USB chargers and hubs, this tester kit ensures each connected device is receiving the appropriate amount of power from its USB port. An easy-to-read LCD screen displays the voltage and amperage in real time. Dual LEDs indicate whether voltage or current is being displayed on the LCD.
Plug-and-Play Tester Comes Ready to Connect Right Away
The T050-001-USB-A requires no software or drivers to download and install and no connection to external power. It supports USB 3.1 Gen 1, but is also backward compatible with previous USB versions, so you can use it with USB 3.0, 2.0 and 1.1 ports and devices.
Sleek Miniature Housing Designed for Everyday Workspace Use or Connecting on the Go
The compact unit is designed for convenient positioning within your reach, allowing you to monitor voltage and current while not taking up much workspace. It is also tiny enough to pack in your pocket, purse or laptop bag for use in a hotel, conference room, trade show or airport.

System Requirements

  • Computer, laptop, tablet, MacBook, Ultrabook, Chromebook or other device with a USB-A connector

Package Includes

  • T050-001-USB-A Voltage and Current Tester Kit, M/F
RoHS compliant


UPC Code037332222077
Accessory TypeCurrent Tester
Accessory ClassUSB Accessories
Voltage Compatibility (VDC)3.5V ~ 24V
Input Current50mA - 6A
Side A - Connector 1USB A (MALE)
Side B - Connector 1USB A (FEMALE)
LED IndicatorsGreen (Amperage) & Orange (Voltage)
Material of ConstructionABS
Shipping Dimensions (hwd / in.)3.94 x 4.72 x 0.24
Unit Dimensions (hwd / in.)0.540 x 2.050 x 0.870
Unit Weight (lbs.)0.03
Operating Temperature Range32° to 140°F (0° to 60°C)
Storage Temperature Range32° to 140°F (0° to 60°C)
Relative Humidity0% to 80% RH, Non-Condensing
USB SpecificationUSB 3.0 (up to 5 Gbps); USB 3.1 Gen 1 (up to 5 Gbps)
Product ComplianceRoHS
Product Warranty Period (Worldwide)3-year limited warranty

Questions & Answers

Need help with your purchase?
We're always available to help with questions, including product selection, sizing, installation and product customization. Call us at +1 773-869-1776 or email