Matrix LC Duplex, 48 Port 24 Position Fibre Patch Panel Loaded With 24 LC Duplex, Singlemode Adaptors. LC Duplex 48 port 24 position patch panel loaded with 24 LC duplex singlemode adaptors (Each). Matrix 19 rack mount fibre patch panels are available with ST, SC, LC or FC adaptor styles in either Multimode or Single mode versions.