Startech USB Voltage and Current Tester Kit This diagnostic kit gives you everything you need to make sure your USB devices are getting the proper charge. It enables you to: troubleshoot or diagnose problems you might encounter while charging fast-charge your mobile device sync your device with your computer Make sure your USB devices are getting a proper charge The diagnostic kit lets you monitor the voltage and current being delivered to your device while its charging, which makes it easy to test different power supplies such as wall and car chargers, computer USB ports, mobile charging banks, and charging stations. Its the perfect diagnostic tool for any test lab or repair facility, because you can monitor the current and voltage consumption of your Apple or Android devices against various power supplies, in order to determine if theres an issue with a specific charger, cable or battery. Plus, if you have several mobile devices at home and at the office, this adapter can help you to better understand your power requirements. Now, its easy to decide which chargers and cables work best for each of your devices, so that you can charge at optimal speed and be ready when you need to be. You can set the tester to either display the voltage or the current reading, depending on your preference. You can also set it to alternate between showing the voltage and the current, so you can keep an eye on both measurements without having to adjust the tester. Save time by charging your devices faster You can quickly charge your devices using the adapters built-in fast-charge feature, when youre charging your devices from a USB port on your laptop computer. The adapter speeds up charge time by using your computer USB host port as a charge-only port, enabling you to charge your mobile devices as if you were using an AC wall charger. Secure Charging The fast-charge mode also provides secure charging. You can disable data transfers and reduce the risks of charging your device from an unknown USB port, such as a public charging station. This helps prevent anyone from stealing data from your mobile device or changing your devices settings. It also helps to protect your devices from downloading any malicious files or viruses over a USB connection. Data sync You can also use the adapter as if it were a standard USB cable connected between your mobile device and your computer, which enables you to sync your device with your computer. Note: You can still charge your device even while its syncing, but it might charge at a slower rate. The USBAUBSCHM is backed by StarTech.coms 2-year Warranty to ensure dependable performance.