Cable/adaptor specification:AdapterADP-CT3 - USB 3.1 Gen2 to Gen1 Internal Adapter - Internal 19-PIN USB 3.1 Gen1 male header - Internal 20-PIN Key-A USB 3.1 Gen2 female header - Data transfer up to 5 Gbps The ADP-CT3 adapter allow backwards compatibility of front panel or external devices using a USB 3.1 Gen2 20-PIN Key-A connector to be connected to mainstream motherboards without said internal connector. It transfers the connection onto a standard 19-PIN USB 3.1 Gen1 male header that can be connected to any of the standard USB 3.1 Gen1 interfaces on the motherboard. SPECIFICATIONS: Model:ADP-CT3Dimension (WxHxD):28 mm x 22 mm x 10 mmWeight (N.W/G.W):20g / 25gVoltage:5VData transfer rate:up to USB 3.1 Gen1 (5Gbps)Connectors:Internal 19-pin USB 3.1 Gen1 male x 1 (host)Internal 20-pin Key-A USB 3.1 Gen2 female x 1 (target)Material:Metal / PlasticWarranty:24 MonthsEAN:0753263077288