This is a charger for a video game console.
From GAMETECH comes this useful Twin AC Adapter SW Bifurcated Cable for your Nintendo Switch! This allows you to charge multiple devices simultaneously. With the ability to charge up to three things at once, you no longer have to worry about which device to choose to plug in. Charge your Nintendo Switch and Pro Controller at the same time! With a 1 metre cable length, you'll have plenty of room to move.
As a bonus feature, you're also able to plug in and charge USB devices with the included USB cable. Charge your phone, camera, and various other consoles, as well.