Front plate 3RU/7HP with 6 SC-D adapters, slotted ceramics sleeve for single mode and multimode applications, suitable for mounting in OpDAT REGpro and OpDAT REG S, gray, powder-coated steel sheet, variants: equipped with SC-D-adapters each metal or blue (OS2), violet (OM4), aqua (OM3), beige (OM2) or green (OS2 APC)