- This high-density fiber panel comes with (6) SC duplex connectors. - Guaranteed for life! Further Details - Adapter panels snap easily into all standard fiber enclosures, cabinets, and patch panels, including all Black Box models. - Panels with ceramic sleeves are well-suited for high-performance, mission critical single-mode and multimode connections. - High-density panels with ST or LC duplex connectors are available. - Standard panels and panels with bronze sleeves are also available.