{"product_id":"100gbase-lr4-qsfp28-module-100g-10km-lc-low-power-ddm","title":"100GBASE-LR4 QSFP28 Module 100G 10km LC - Low Power, DDM","description":"\u003cp\u003eIn this review of the 100GBASE-LR4 QSFP28 module from QSFPTEK, the bottom line is simple: this is a practical, no-nonsense 100 Gigabit optical transceiver for network engineers who need reliable long-reach links up to 10km. The reviewer found the module to be straightforward to deploy in lab and production environments, offering \u003cstrong\u003e100G data rate\u003c\/strong\u003e, duplex LC connectivity and built-in DDM for live diagnostics, all while keeping power consumption low. It is aimed at users wanting a Cisco-compatible LR4 option without vendor lock-in.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e100G link:\u003c\/strong\u003e Provides full 100 Gigabit performance suitable for backbone and data center uplinks.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e10km reach:\u003c\/strong\u003e Duplex LC connectors and LR4 optics support single-mode fiber links up to 10km for campus or inter-building runs.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eBuilt-in DDM:\u003c\/strong\u003e Digital diagnostics monitoring gives real-time access to optical parameters for easier troubleshooting.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLow power:\u003c\/strong\u003e The module consumes around 3.5W, which helps reduce overall system power and cooling needs.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHot pluggable and FEC support:\u003c\/strong\u003e Hot-swappable QSFP28 design with Host FEC compatibility simplifies upgrades and improves link stability.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVendor compatibility:\u003c\/strong\u003e Compatible with Cisco 100Gigabit ethernet coding and 200+ vendors, easing integration into heterogeneous networks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis module is aimed at network administrators and system integrators running 100G infrastructure in data centers, enterprise core layers, or campus backbones who need a reliable LR4 module with monitoring. It is particularly useful where duplex LC single-mode fiber already exists and where a cost-effective alternative to a first-party transceiver is acceptable.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users requiring multimode fiber support, links beyond 10km, or proprietary vendor-specific modules mandated by strict compatibility policies at some service providers. For short-reach or copper-based links, a different QSFP option would be more appropriate.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eProvides true \u003cstrong\u003e100GBASE-LR4\u003c\/strong\u003e performance suitable for telecom and data center uplinks.\u003c\/li\u003e\n \u003cli\u003eSupports \u003cstrong\u003eDDM\u003c\/strong\u003e for live diagnostics, which simplifies monitoring and troubleshooting.\u003c\/li\u003e\n \u003cli\u003eLow power draw around 3.5W reduces thermal load in dense systems.\u003c\/li\u003e\n \u003cli\u003eWide vendor compatibility and Cisco coding make integration straightforward in mixed environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eLimited to single-mode fiber and 10km reach, so it is not suitable for longer-haul applications.\u003c\/li\u003e\n \u003cli\u003eNot designed for multimode fiber installations, which require different optics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eForm factor\u003c\/td\u003e\n\u003ctd\u003eQSFP28\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eData rate\u003c\/td\u003e\n\u003ctd\u003e100G\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eWavelength \/ Type\u003c\/td\u003e\n\u003ctd\u003e1310nm LR4\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eMaximum link length\u003c\/td\u003e\n\u003ctd\u003e10km over single-mode fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003eDuplex LC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003ePower consumption\u003c\/td\u003e\n\u003ctd\u003eApproximately 3.5W\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eDiagnostics\u003c\/td\u003e\n\u003ctd\u003eDDM \/ DOM supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe QSFPTEK 100GBASE-LR4 QSFP28 module is a solid value for engineers needing a \u003cstrong\u003e100G LR4\u003c\/strong\u003e transceiver with monitoring and low power use. It fits standard QSFP28 slots, supports Host FEC and DDM, and is a practical Cisco-compatible option for data centers and campus backbones where 10km single-mode links are required.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this module compatible with Cisco devices?\u003c\/strong\u003e\u003cbr\u003eYes, it is coded for compatibility with Cisco QSFP-100G-LR4-S and is reported to be compatible with 200+ vendors, though checking device firmware is recommended.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it support diagnostics and monitoring?\u003c\/strong\u003e\u003cbr\u003eYes, the module supports DDM\/DOM for real-time monitoring of optical parameters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat fiber and connectors are required?\u003c\/strong\u003e\u003cbr\u003eUse single-mode fiber with duplex LC connectors; the LR4 optics are rated for up to 10km links.\u003c\/p\u003e","brand":"QSFPTEK","offers":[{"title":"Default Title","offer_id":48618795532507,"sku":"B0B4583CTD","price":415.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61EHbzuCEmL._AC_SL1500.jpg?v=1778506210","url":"https:\/\/gearmusthave.com\/products\/100gbase-lr4-qsfp28-module-100g-10km-lc-low-power-ddm","provider":"GearMustHave","version":"1.0","type":"link"}