So USB killer is getting a lot of attention onto the internet I just killed the google Pixel so i have seen videos in which people how Killed i phone 7 galaxy note 7 even the latest MacBook pro so let's see what is this USB killer so USB killer is a small little device almost the size of a USB flash drive it looks pretty identical you can't tell the difference but it has a power to damage most of the consumer electronics devices available in the market right now now if you want to see it's true potential "EverythingApplePro" including other Youtubers did a very good job demonstrating Usb killer links are in the description below now USB killer circuit contains a high voltage inverter which is powered from host USB computers 5 volts once USB Kill plugged in it charges it's Built-in capacitors to about 200 volts and then discharge them onto the data lines which effectively kills a USB port or sometimes a whole computer device itself this damage is permanent so think twice before you plug in any unknown USB flash drive . USB killer demonstrates a major flaw in about 99% of consumer electronics that we use computers, laptops, TV even our smartphones offer USB port and in our to day to day lives we don't even think before we plug in any USB device so it's a really big issue if someday and unknown USB device kills your Favorite & Expensive computer device. To test whether the device is safe or not you can use the USB killer Tester Shield which prevents high voltage from getting into the computer device and discharge externally through bare wires one of the permanent solutions will be to include a Varistor in your USB port Varister is the electronic component which dissipates high voltage energy spikes by creating a short circuit if the voltage goes beyond the threshold. currently, you can buy this USB killer for about 55$ - 100 $ and its tester is sold separately for 16 $. For the amount of Technology that goes into this USB killer, I think it's really expensive but there is no one preventing you from making your own Homemade DIY USB Killer so if you want to know how to make this USB killer in a really simple Homemade way let me know in the comments down below guys and I'll see you in the next one Peace!