Pre-terminated high-density modular fiber optic cassettes support network data rates up to 10 Gb/s for link lengths up to 300 meters using laser optimized OM3 fiber and link lengths up to 550 meters using OM4 fiber. Optimized cassettes shall provide insertion loss of 0.5 dB max., and standard cassettes shall provide 1.0 dB max. to meet IEEE 802.3ae max. channel loss specification of <26 dB. Cassettes shall employ high performance MTP connectors on the rear of the units routed to 6 or 4 duplex LC or 3 duplex SC adapters on the patch field side. Adapter housing colors shall follow TIA/EIA-568-C.3 suggested color identification scheme. Cassettes shall interconnect with high-density SFF MTP ribbon interconnect cable assemblies.