USB/3.5 mm audio socket Berker S.1/B.3/B.7 polar white, matt Audio frequency range 20 ... 20 KHz Transfer rate (USB) max. 480 MBit/s For connecting mobile devices such as cell phones or MP3 players (mini audio) as well as digital cameras and computer peripherals (USB 2.0). Observe the cable and device manufacturers' instructions regarding the maximum USB cable length! - USB double socket type A, USB 2.0 capable - Jack double socket gold-plated 3.5 mm, stereo - without spreading claws