USB 3.0 slot plates connectors based on HS20 and BH20. This type of connectors and cables allow the transmission of 2 signals in a USB 3.0 connector. These are the typical 20-pin connectors found on the motherboard. The connectors have 2 rows of 10-pin. The HS20 is a female connector and the connector is male BH20. These adapter plates or brackets metal slot are provided in standard profile or low profile for installation in the back without taking a computer expansion slot. Only take an opening slot on the back.