Advanced network discovery and topology mapping Comprehensive diagnostics and troubleshooting features, enhancing network visibility and operational efficiency A robust set of automated tests for precise network validation and troubleshooting, ensuring seamless moves, adds, and changes The LinkRunner AT 4000 is a cutting-edge network cable tester for modern networking tasks and infrastructural diagnostics. Designed for network engineers requiring a robust toolset for both fiber and Multigigabit Ethernet environments, it offers. Features Networking standards IEEE 802.3, IEEE 802.3ab, IEEE 802.3af, IEEE 802.3at, IEEE 802.3bt, IEEE 802.3i, IEEE 802.3u, IEEE 802.3z Easy to use Yes LED indicators Battery level Fiber mode structure Multi-mode RJ-45 ports quantity 1 Product colour Black, Green Backlight display Yes Display diagonal 12.7 cm (5") Display type LCD Built-in display Yes Supported connectors RJ-45, SFP, SFP+ Test type PoE testing, Transmission testing Product type PoE tester Power