This hacky double ended USB cable lets you power a hungry USB micro-B device from two low powered USB-A ports.
If you find yourself wanting to do something like use an external hard drive with an older Raspberry Pi without the need for additional cables/power supplies (for reasons), then this could be the cable for you! A tidy 31cm from connector to connector means you won't need to mess with long cable runs.
⚠ Using USB in experimental ways can damage your USB ports and your devices, please only use cursed USB cables like this if you know what you're doing!