LYNN KEY-LC2-AQ (Millennium part 611855) is a duplex LC/PC keystone jack built for OM3 and OM4 multimode fiber, with aqua housing that follows industry color coding for laser-optimized 50/125 um links. The keystone body drops into standard faceplates, modular patch panels and surface-mount boxes, letting technicians build mixed fiber and category-cable outlets from a single hardware platform. Precision-aligned LC adapters hold consistent mating tolerances for 10G and 40G short-reach data center and enterprise runs. A practical termination point for structured cabling work inside offices, campuses and equipment rooms.