The addlink's U55 fully compatible with SuperSpeed USB 3.1 Gen1. This combination of blazing fast data transfer rates and substantial storage space, make it easier than ever to store, carry and share all your digital files wherever you go.The addlink's U55 fully compatible with SuperSpeed USB 3.1 Gen1. This combination of blazing fast data transfer rates and substantial storage space, make it easier than ever to store, carry and share all your digital files wherever you go