Keystone Insert 1. USB B Female adapter, Nickel 2. USB 2.0 or 3.0 version 3. Flush style 4. UL&ABS material, RoHS appoval Keystone, Keystone Insert,Keystone JackAdapters components:1. BNC bulk head, Female to Female2. F bulk head, Female to Femal3. Svideo, Female to Female4. RCA, Female to Female5. USB, A Female to Female6. USB, A Female to B Female7, USB, B Female to Female8, HDMI, A Female to ...