{"product_id":"startech-qsfp28-loopback-module-100g-passive-qsfp28-loopback-adapter-qsfp-port-tester-100g-qsfp-loopback-test-plug-msa-compliant-loopbackplug100","title":"StarTech QSFP28 Loopback Module, 100G Passive QSFP28 Loopback Adapter, QSFP Port Tester, 100G QSFP Loopback Test Plug - MSA Compliant - LOOPBACKPLUG100G","description":"\u003ch3\u003e\u003cstrong\u003e\u003cem style=\"display: block; text-align: center;\"\u003eStarTech QSFP28 Loopback Module, 100G Passive QSFP28 Loopback Adapter, QSFP Port Tester, 100G QSFP Loopback Test Plug - MSA Compliant - LOOPBACKPLUG100G\u003c\/em\u003e\u003c\/strong\u003e\u003c\/h3\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eACCURATE 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 diagnostics\u003c\/li\u003e\n\u003cli\u003eBUILT 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 performance\u003c\/li\u003e\n\u003cli\u003eFIELD-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 required\u003c\/li\u003e\n\u003cli\u003eRELIABLE 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 100Gbps\u003c\/li\u003e\n\u003cli\u003eTHE IT PRO'S CHOICE: Our network tools and testers are rigorously tested in our Innovation Lab to ensure enterprise-grade reliability and durability; Bui\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Overview\u003c\/h3\u003e\u003cp\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.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eTest 100G QSFP28 Connections\u003c\/b\u003e\u003c\/p\u003e\u003cp\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.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eAccurate Signal Diagnostics\u003c\/b\u003e\u003c\/p\u003e\u003cp\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.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFor Enterprise Network Switches\u003c\/b\u003e\u003c\/p\u003e\u003cp\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.\u003c\/p\u003e\u003cdiv class=\"tech-specs\"\u003e\u003cdiv\u003e\n\u003ch4\u003e\u003cstrong\u003eGeneral Information\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul class=\"attr_group\"\u003e\n\u003cli\u003eManufacturer: StarTech.com\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: LOOPBACKPLUG100G\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBrand Name: StarTech.com\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eProduct Name: QSFP28 Module\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eProduct Type: QSFP28\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePackaged Quantity: 1 Box\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eTechnical Information\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul class=\"attr_group\"\u003e\u003cli\u003eApplication\/Usage: \u003cul\u003e\n\u003cli\u003eData Networking\u003c\/li\u003e\n\u003cli\u003eOptical Network\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eInterfaces\/Ports\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul class=\"attr_group\"\u003e\n\u003cli\u003eTotal Number of Ports: 1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInterfaces\/Ports Details: 1 x 100GBase-X Network\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eMedia \u0026amp; Performance\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul class=\"attr_group\"\u003e\n\u003cli\u003eMedia Type Supported: Optical Fiber\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEthernet Technology: 100 Gigabit Ethernet\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNetwork Technology: 100GBase-X\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaximum Data Transfer Rate: 100 Gbit\/s\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003ePhysical Characteristics\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul class=\"attr_group\"\u003e\n\u003cli\u003eProduct Color: Silver\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eProduct Material: \u003cul\u003e\n\u003cli\u003ePlastic\u003c\/li\u003e\n\u003cli\u003eMetal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeight: 0.5\"\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWidth: 0.7\"\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLength: 5\"\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight (Approximate): 0.08 lb\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eMiscellaneous\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul class=\"attr_group\"\u003e\n\u003cli\u003eCompatibility: \u003cp\u003eMSA Compliant\u003c\/p\u003e\n\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTAA Compliant: Yes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEnvironmental Compliance: \u003cul\u003e\n\u003cli\u003eWaste Electrical and Electronic Equipment Directive (WEEE)\u003c\/li\u003e\n\u003cli\u003eRestriction of Hazardous Substances (RoHS)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul class=\"attr_group\"\u003e\u003cli\u003eLimited Warranty: 2 Year\u003cbr\u003e\n\u003c\/li\u003e\u003c\/ul\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\u003c\/div\u003e","brand":"StarTech.com","offers":[{"title":"Default Title","offer_id":53572133650616,"sku":"LOOPBACKPLUG100G","price":83.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/9110\/4952\/files\/1088601164.jpg?v=1780987725","url":"https:\/\/islandelectricalsupply.com\/products\/startech-qsfp28-loopback-module-100g-passive-qsfp28-loopback-adapter-qsfp-port-tester-100g-qsfp-loopback-test-plug-msa-compliant-loopbackplug100","provider":"Island Electrical Supply","version":"1.0","type":"link"}