Tripp Lite Cisco-Compatible QSFP-40G-SR4 QSFP+ Transceiver - 40GBase-SR4. Multimode N286-40GSR4-MTP Now: $235.07 View Product
Hummingbird Networks Brand Compatible/Replacement for Cisco QSFP-40G-SR4-S 40GBASE-SR4 QSFP Module for MMF Now: $74.99 View Product
Cisco - QSFP+ Transceiver Module - 40 Gigabit LAN - 40GBASE-SR4 - MPO Multi-mode - Up To 1310 Ft - 850 Nm - QSFP-40G-CSR4= Now: $2,302.35 View Product