Product Description: double layer 2*USB3.0 Female A to Female A l Metal crust made of Aluminium Alloy, have black and silver for your choose, other color can be customized. l Fixed by nut, easy to install. l Operating Temperature: -25℃~+55℃(No Freezing) l Pane Cutout: 25 mm l Panel Thickness:1~ 10mm l Transmission Rate:≥100MB/s l operating Humidity: 45-85%RH(NO Condensation) 