Description: brand new and high quality Material: Plastic+Metal Color: Black Type:USB2.0,USB3.0(Optional) Size: 4.5x1.8cm Connector 1:USB 2.0 A female Connector 2:USB 2.0 A female Connector 1:USB 3.0 A female Connector 2:USB 3.0 A female Connect this adapter to USB male to male cable,will become a USB extension cable. Connect this adapter to USB male to female cable,will become a USB Female To Female extension cable. Have you ever found yourself in a situation where you need a six feet cable but you only have two three foot cables? What a silly question; of course you have! Female coupler is the perfect solution for combining two USB 3.0 or USB 2.0 cables of varying lengths to create a longer cable. Join two USB 3.0 Type-A Male connectors with this coupler connector. Support USB 3.0 speed up to 5 Gbps. USB 3.0 female-to-female coupler will extend the distance of your existing USB 3.0 cable by allowing two cables to be coupled together. Backward for USB 2.0 and 1.1 interface. Package includes: 1 X USB female To female adapter (No retail package)