Centre plate for stereo loudspeaker socket ref.-no.: SLA 2 WW, SLA 2 ANCentre plate for 2-gang supporting frame ref.-no.: UMA-MA2 in connection with universal modular jack socket type A ref.-no.: UMA-CAT6A Centre plate for USB data interface ref.-no.: 2130 USB And centre plate for USB charger ref.-no.: USB 21-2