Keep critical network segments online in locations where temperature swings and environmental stress can compromise standard switching hardware. The Black Box LE2722C is an extreme-temperature Gigabit Ethernet switch module designed for the LE2700 Series Hardened Managed Modular Switch, giving infrastructure teams a compact way to extend fiber or copper connectivity through four 100/1000-Mb SFP ports. This module is built for data networking and optical network applications that demand dependable expansion without replacing the core switch platform. Its modular design helps preserve investment in the LE2700 ecosystem while adding the port density needed for segmented industrial networks, remote cabinets, and distributed edge deployments. For teams specifying hardware for long service life, the 5-year limited warranty adds another layer of confidence. Choose this module when uptime matters more than commodity pricing. It is a practical fit for environments where hardened switching, modular expansion, and temperature tolerance are part of the design requirement, not an afterthought.