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Networx Gigabit RJ45 Loopback Tester - 10/100/1000Base-T Network Port Validator - Ethernet Diagnostic Tool for Switches and Server NICsDescription Item model number LB-GB45S Style 10/100/1000 Mbps Loopback Color Blue Product Dimensions 3.56 x 3.25 x 0.78 inches Item dimensions L x W x H 3.56 x 3.25 x 0.78 inches Compatible Devices PC Item Weight 0.96 ounces Connector Type RJ45 Is Discontinued By Manufacturer No Brand Networx

• PROFESSIONAL NETWORK DIAGNOSTICS: Instantly verifies active network ports and link status. This molded adapter loops all four wire pairs (1-3, 2-6, 4-7, 5-8) to perform echo tests on switches, wall jacks, and NICs.
• FULL GIGABIT SUPPORT: Unlike older testers, this unit supports modern 1000Base-T interfaces while maintaining backward compatibility with standard 10/100 Fast Ethernet.
• UNIVERSAL COMPATIBILITY: Engineered to fit securely in all standard RJ45 ports. Provides the correct signal return for accurate diagnostics on unmanaged/managed switches and server hardware.
• COMPACT & DURABLE: Built for the IT tool bag. Features a solid molded PVC housing and gold-plated contacts to ensure a corrosion-free connection for years of daily use.
• LIFETIME WARRANTY: Backed by the Networx Lifetime Warranty. Ideal for Network Engineers, Sysadmins, and Ethernet Diagnostics. Streamline your network troubleshooting with the Networx Gigabit Loopback Tester. Designed for professional diagnostics, this compact, molded adapter loops all four wire pairs to verify active network ports in seconds. It supports full echo tests and link verification on both modern Gigabit (1000Base-T) interfaces and standard 10/100 Ethernet. Engineered for universal compatibility, it connects seamlessly to any RJ45 port, providing the correct signal return for accurate testing of switches, server NICs, and wall jacks.