Black Box JPM385A Network Patch PanelAdapter panels can be used with most single mode and all multimode applications. Connectors feature high retention phospor bronze alignment sleeves. Swing out fiber management tray makes it easy to maintain fiber optic cable bend radius requirements. Only 1U high. Fits 19" or 23" racks. For a rackmount fiber patch panel that's preloaded with fiber adapter panels, order one of these patch panels. They're preloaded with simplex ST, duplex SC, or duplex