... Available in 100 pairs in density. 2.110 wiring block 3.ODM&OEM 4.Certificate:UL,CE,ROHS,ISO9001 ... 1U (without connecting blocks)110 WIRING BLOCKS 50 PAIRS WITH LEG,110 TERMINATION KITS 50 PAIR WITH LEGA patch panel or patch ... together internally. When a patch bay has half-normal wiring, its switching contacts flow through the bottom jacks ... , but less convenient. 4U 400 pair 110 wiring block with panel