StarTech QSFP28 Loopback Module, 100G Passive QSFP28 Loopback Adapter, QSFP Port Tester, 100G QSFP Loopback Test Plug - MSA Compliant The StarTech.com QSFP28 Loopback Module is an essential tool for testing 100G ports in switches, network interface cards, and other QSFP28-compatible devices. Designed for passive electrical loopback, this module facilitates verification of signal continuity, link stability, and port behavior without the need for active optics, making it ideal for data centers and enterprise networking environments. It supports 28Gbps per lane across four lanes, ensuring accurate and reliable diagnostics during hardware validation and system maintenance. The module's 100Ω impedance and low jitter characteristics promote stable signal reflection, enabling technicians to quickly identify issues related to electrical link integrity.Constructed from durable metal and measuring just 5 inches long, this compact device is built for multiple test cycles and field use. Its low-power design conforms to IEEE 802.3 standards and MSA compliance, guaranteeing universal compatibility with a wide range of MSA-compliant equipment. The plug-and-play nature allows for rapid deployment; simply connect the module directly into QSFP28 ports on switches, routers, or NICs to perform inline diagnostics without optical transceivers. This makes it a versatile choice for troubleshooting, hardware validation, and routine port testing in enterprise and edge environments.Backed by a 2-year limited warranty, the StarTech.com QSFP28 Loopback Module provides enterprise-grade reliability and durability. Its compact, portable design ensures ease of use in various field settings, reducing downtime and enabling quick verification of port functionality. Whether in data centers or onsite maintenance, this module is a trusted tool for IT professionals seeking precise, dependable electrical loopback testing for high-speed network ports.Features:RELIABLE QSFP TESTING: Create a loopback test connection with this QSFP28 passive electrical loopback module; Connects directly to QSFP28 ports for testing signal continuity and verifying electrical link integrity at 100GbpsACCURATE TEST PERFORMANCE: Supports 28Gbps per lane across four lanes with 100Ω impedance for stable signal reflection; Low jitter and consistent lane performance ensure reliable test results during diagnosticsBUILT FOR DURABILITY: Optimized for multiple test cycles with a compact, low-power design; Meets IEEE 802.3 requirements and MSA compliance for universal compatibility and guaranteed performanceFIELD-READY DESIGN: Compact module is ideal for technicians performing port-level diagnostics and hardware validation; Quickly confirm QSFP28 port behavior during system maintenance or troubleshooting; No optical transceiver requiredTHE IT PRO'S CHOICE: Our network tools and testers are rigorously tested in our Innovation Lab to ensure enterprise-grade reliability and durability
