What are the most important things to look for? Interface type: The Xbox One series of consoles supports up to two external hard drives, connected via a USB 3 cable. This is important: the Xbox One doesn't support newer USB 3.1 gen 2, or indeed USB-C or other miniaturised versions of the USB connector (miniUSB or microUSB). Fortunately, most modern external hard drives have a USB 3 cable, so you won't need to worry too much about this. Portable or desktop? We will always recommend buying a portable external hard drive for your Xbox One. These drives don't require a dedicated mains power supply, which just means you have one less cable to worry about. The downside is that they tend to max out at 4TB; if you need more space, you'll need a