Quantity:(2-Pack) Size:Length, width, height(2.9cm 1.6cm 1.5cm) Material:plastic. Color:(Black) Connectors 1:USB 3.1 Type-C Keystone Female jack.Connectors 2: USB 3.1 Type-C Keystone Female jack. The USB 3.1 Type-C Keystone Inserter connects two USB Type-C cable males; USB Type-C 3.1 USB keystone fits a standard opening in a patch panel or wall plate for keystone jacks. Connects equipment with USB Type-C ports like a PC, desktop, laptop,smart phone,Compatble with most usb c devices such as Samsung Galaxy Note 8, Samsung Galaxy S8 Plus,LG V30, G6, G5, V20,ChromeBook Pixel, New Macbook and more. Other equipment with USB Type-C with the cables concealed behind the wall via wall plates. This is USB 3.1 full-featured adapters, It supports Charging, data sync,audio and video transfer,The maximum current is 3A, Data synchronization speed up to 5 Gbps. It is usually used as a USB C type