This low profile Slot bracket by Delock is suitable for installation into a PC slot of a mini PC and expands your system by two external USB 3.0-A ports. Thus you can connect different USB 3.0 devices, like e.g. external enclosure, card reader, memory and so on. Since the USB 3.0-A interface is compatible to its forerunners USB 2.0 and USB 1.1, you can still use your existing USB devices.