The adapter is a converter to convert the available PCI-E 1x of a motherboard into a USB 3.1 header.. Thus the USB 3.1 port of a housing can also be supplied with USB 3.1 without a suitable mainboard.. The compact adapter can be inserted directly and requires no additional attachments.. Fits into any USB 3.0 header. Bundling in USB 3.1 with up to 5GBit / s