Cisco Module SFP-10G-LR

Long Range Transmission - This SFP+ module is capable of data transfer over a distance of up to 10 kilometers (6.2 miles).
Hot-Swappable - No need to power down your device when plugging in or removing these modules.
Small Form Factor - This module is the smallest form factor available for data transmission at speeds of 10Gbps.
Digital Optical Monitoring (DOM) Capability - Allows for strong diagnostic capabilities.