{"product_id":"startech-com-loopbackplug100g","title":"StarTech.com LOOPBACKPLUG100G network cable tester Fibre tester","description":"\u003cp\u003ePerform loopback testing and verify signal continuity on QSFP28 connections and port interfaces\u003cbr\u003e\u003cbr\u003eThis QSFP28 loopback module is designed for testing 100G ports on switches, NICs, and other QSFP28-equipped devices. It supports passive electrical loopback to verify signal continuity, link stability, and port behavior without the need for 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 100 Gbps and is compatible with 40GBASE and 100GBASE Ethernet. It is MSA compliant and meets IEEE 802.3 requirements for reliable performance and universal compatibility.\u003cbr\u003e\u003cbr\u003ePrecise Signal Diagnostics\u003cbr\u003e\u003cbr\u003ePerform electrical loopback testing for comprehensive 100G link verification. Ensure consistent signaling with 100 Ω 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 in-line port testing. Compact and low-power, it is an essential tool for network technicians and IT professionals in data centers and edge or on-premise facilities.\u003c\/p\u003e\n\u003cp\u003eStarTech 100G Passive QSFP28 Loopback Adapter Module - Port Tester - 100G MSA QSFP Loopback Connector\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eReliable QSFP Testing\u003c\/b\u003e: Create a loopback test connection with this passive electrical QSFP28 loopback module - Plugs directly into QSFP28 ports to test signal continuity and verify link integrity\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003ePrecise Test Performance\u003c\/b\u003e: 28 Gbps per lane across four lanes with 100 Ω impedance for stable signal reflection - Low jitter and consistent lane performance ensure reliable test results\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eBuilt to Last\u003c\/b\u003e: Optimized for multiple test cycles with a compact and low-power design - Complies with IEEE 802.3 requirements and MSA standards to ensure universal compatibility and performance\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eField-Ready Design\u003c\/b\u003e: For technicians performing port-level diagnostics and hardware validation - Quickly confirm QSFP28 port behavior during maintenance or troubleshooting - No optical transceiver required\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eThe IT Pro's Choice\u003c\/b\u003e: Our network tools and testers undergo rigorous testing in our innovation lab to ensure enterprise-grade reliability\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ctable class=\"specs\"\u003e\n\n\u003ctr\u003e\u003cth colspan=\"2\"\u003eFeatures\u003c\/th\u003e\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\n\u003ctd\u003eFiber optic tester\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eTest type\u003c\/td\u003e\n\n\u003ctd\u003eLoopback test\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eSupported connectors\u003c\/td\u003e\n\n\u003ctd\u003eQSFP28\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eBuilt-in display\u003c\/td\u003e\n\n\u003ctd\u003eNo\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eProduct color\u003c\/td\u003e\n\n\u003ctd\u003eSilver\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eHousing material\u003c\/td\u003e\n\n\u003ctd\u003eMetal, Plastic\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eConnector gender\u003c\/td\u003e\n\n\u003ctd\u003eMale\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eNetwork standards\u003c\/td\u003e\n\n\u003ctd\u003eIEEE 802.3ba\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\u003cth colspan=\"2\"\u003eRegulatory approvals\u003c\/th\u003e\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eCompliance certificates\u003c\/td\u003e\n\n\u003ctd\u003eTrade Agreements Act (TAA), RoHS, CE\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\u003cth colspan=\"2\"\u003eEnvironmental conditions\u003c\/th\u003e\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eOperating temperature range\u003c\/td\u003e\n\n\u003ctd\u003e-40 - 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