Yes, sort of. The USB 3.0 standard can transfer more data and power than the USB 2.0 version. This means that if your power bank has a USB 3.0 slot, your device supports the faster charging of a USB 3.0 connection – and if you use a USB 3.0 cable, you’ll charge faster than you would if any one of the components relied on USB 2.0. The USB 3.0 standard is backward;compatible, so it has no problem charging USB 2.0 devices. If you can afford to, buy a model that features at least one USB 3.0 port.