Cisco Systems OC3/STM1 SFP Single-Mode Fiber Long Reach 40KM

8 Port L2 Ge Switch Network I/F Module

Cisco Systems Part# NIM-ES2-8=

Modules – Expansion Module - 8.0 Total Number of Expansion Slots - China - SFP (mini-GBIC) - Cisco Switches: - 4451-X - 4431 - 4351 - 4331 - 4321 - Data Networking - Optical Network

40GBASE-SR4 QSFP XCVR Module with Conn

Cisco Systems Part# QSFP-40G-SR4=

Modules – QSFP+ - 40 Gigabit Ethernet Ethernet Technology - Optical Fiber - 1 Total Number of Ports - Hot-swappable - 40GBase-SR4 Network Technology - Multi-mode - 0.5" Height - 0.7" Width - 2.9" Depth - MPO-12