Check the listing for details. UT658A USB 'A' Cable Tester Voltage Current Power Uni-T. Condition: New, Made in China. Listed at 28.78 USD. UT658A USB 'A' Cable Tester Voltage Current Power Uni-T UT658A USB 'A' Cable Tester Voltage Current Power Uni-T The UT658A is a second generation USB tester capable of inspecting USB chargers, portable power sources, USB type A cables and other electronic charging devices. The tester measures output voltage, current, energy, capacity, circuit equivalent resistance, D+ and D- voltages of USB data cables. The tester is designed to be precise, reliable, stable, and portable. They are great tools for applications such as manufacturing verification, engineering testing, and DIYers. Compatible with input/output USB type A ports (2.0 and 3.0) Loop equivalent resistance measurement (1-480Ω) Same screen shows voltage, current, power, capacity, etc Support fast charge protocol Dimensions: 93mm x 45m.