{"product_id":"qsfp28-loopback-module-100g-qsfp-port-tester-loopback-adapter","title":"QSFP28 LOOPBACK MODULE 100G QSFP PORT TESTER\/LOOPBACK ADAPTER","description":"Perform loopback testing and verify signal continuity across QSFP28 connections and port interfaces\u003cbr\u003e\u003cbr\u003eThis QSFP28 Loopback Module is designed for testing 100G ports in switches, NICs, and other QSFP28-equipped devices. It supports passive electrical loopback for verifying signal continuity, link stability, and port behavior without requiring active optics.\u003cbr\u003e\u003cbr\u003eTest 100G QSFP28 Connections\u003cbr\u003e\u003cbr\u003eThe QSFP28 Loopback Adapter emulates 4-lane electrical testing for QSFP28 ports operating at 100Gbps, and supports 40GBASE and 100GBASE Ethernet. It is MSA compliant and meets IEEE 802.3 requirements for reliable performance and universal compatibility.\u003cbr\u003e\u003cbr\u003eAccurate Signal Diagnostics\u003cbr\u003e\u003cbr\u003ePerform electrical loopback testing for full 100G link verification. Ensure consistent signaling with 100Ω impedance and low jitter for stable, repeatable test results under real-world conditions.\u003cbr\u003e\u003cbr\u003eFor Enterprise Network Switches\u003cbr\u003e\u003cbr\u003eConnect directly to QSFP28 ports on switches, routers, and NICs for inline port testing. Compact and low-power, it is an essential tool for network technicians and IT pros in data centers and edge or on-prem installations.","brand":"StarTech.com","offers":[{"title":"Default Title","offer_id":51850524098838,"sku":"660V31","price":81.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/3091\/4582\/files\/3333c12ad0ab1f646deb1771d3b37b57252c4a62.jpg?v=1789000077","url":"https:\/\/www.tekswork.com\/products\/qsfp28-loopback-module-100g-qsfp-port-tester-loopback-adapter","provider":"TEKSwork","version":"1.0","type":"link"}