{"v":"2.0","page_type":"product","title":"StarTech.com Dell EMC QSFP-40G-ESR4 Compatible QSFP+ Module - 40GBASE-SR4 40GE QSFP+ 40GbE Multimode Fiber MMF Optic Transceiver 400m DDM","breadcrumbs":[{"label":"Home","href":"/python/html6/index.html"},{"label":"Brands","href":"/python/html6/menu_brand_index/menu_brand_index_brands_87101ba214.html"},{"label":"STARTECH.COM","href":"/python/html6/menu_brand_products/1000/142000/menu_brand_products_StarTechcom_1_1aa1ea0ea9.html"},{"label":"QSFP40GESR4E","href":null}],"content":{"product":{"mpn":"QSFP40GESR4E","manufacturer":"STARTECH.COM","brand":"STARTECH.COM","brand_url":"/python/html6/menu_brand_products/1000/142000/menu_brand_products_StarTechcom_1_1aa1ea0ea9.html","title":"StarTech.com Dell EMC QSFP-40G-ESR4 Compatible QSFP+ Module - 40GBASE-SR4 40GE QSFP+ 40GbE Multimode Fiber MMF Optic Transceiver 400m DDM","description":"","attributes":[{"name":"Brand name","values":[{"value":"STARTECH.COM","url":"/python/html6/menu_attr_pair/1000/53000000/53567000/menu_attr_pair_Brandname_STARTECHCOM_1_af1a2264cd.html"}],"name_url":"/python/html6/menu_attr_pair/1000/53000000/53567000/menu_attr_pair_Brandname_STARTECHCOM_1_af1a2264cd.html"},{"name":"Manufacturer name","values":[{"value":"STARTECH.COM","url":"/python/html6/menu_attr_pair/1000/102000000/102309000/menu_attr_pair_Manufacturername_STARTECHCOM_1_03cecd1c09.html"}],"name_url":"/python/html6/menu_attr_pair/1000/102000000/102309000/menu_attr_pair_Manufacturername_STARTECHCOM_1_03cecd1c09.html"},{"name":"Manufacturer","values":[{"value":"STARTECH.COM","url":"/python/html6/menu_attr_pair/1000/20000000/20911000/menu_attr_pair_Manufacturer_STARTECHCOM_1_47c5339577.html"}],"name_url":"/python/html6/menu_attr_pair/1000/20000000/20911000/menu_attr_pair_Manufacturer_STARTECHCOM_1_47c5339577.html"},{"name":"Extra Product Name","values":[{"value":"StarTech.com Dell EMC QSFP-40G-ESR4 Compatible QSFP+ Module - 40GBASE-SR4 40GE QSFP+ 40GbE Multimode Fiber MMF Optic Transceiver 400m DDM","url":"/python/html6/menu_attr_pair/1000/184000000/184109000/menu_attr_pair_ExtraProductName_StarTechcomDellEMCQSFP40GESR4CompatibleQSF_1_a602b57b8e.html"}],"name_url":"/python/html6/menu_attr_pair/1000/184000000/184109000/menu_attr_pair_ExtraProductName_StarTechcomDellEMCQSFP40GESR4CompatibleQSF_1_a602b57b8e.html"},{"name":"Weight","values":[{"value":"1","url":"/python/html6/menu_attr_pair/1000/168000000/168176000/menu_attr_pair_Weight_1_1_ed6e812c17.html"}],"name_url":"/python/html6/menu_attr_pair/1000/168000000/168176000/menu_attr_pair_Weight_1_1_ed6e812c17.html"},{"name":"WeightUnit","values":[{"value":"lbs","url":"/python/html6/menu_attr_pair/1000/60000000/60642000/menu_attr_pair_WeightUnit_lbs_1_dce479c2aa.html"}],"name_url":"/python/html6/menu_attr_pair/1000/60000000/60642000/menu_attr_pair_WeightUnit_lbs_1_dce479c2aa.html"},{"name":"countryOfOrigin","values":[{"value":"China","url":"/python/html6/menu_attr_pair/1000/183000000/183092000/menu_attr_pair_countryOfOrigin_China_1_ae0adc90ef.html"}],"name_url":"/python/html6/menu_attr_pair/1000/183000000/183092000/menu_attr_pair_countryOfOrigin_China_1_ae0adc90ef.html"},{"name":"moq","values":[{"value":"1","url":"/python/html6/menu_attr_pair/1000/164000000/164262000/menu_attr_pair_moq_1_1_29ca727a89.html"}],"name_url":"/python/html6/menu_attr_pair/1000/164000000/164262000/menu_attr_pair_moq_1_1_29ca727a89.html"},{"name":"MPN","values":[{"value":"QSFP40GESR4E","url":"/python/html6/menu_attr_pair/1000/212000000/212798000/menu_attr_pair_MPN_QSFP40GESR4E_1_3a51061804.html"}],"name_url":"/python/html6/menu_attr_pair/1000/212000000/212798000/menu_attr_pair_MPN_QSFP40GESR4E_1_3a51061804.html"},{"name":"multiple","values":[{"value":"1","url":"/python/html6/menu_attr_pair/1000/257000000/257999000/menu_attr_pair_multiple_1_1_2f60c1bab8.html"}],"name_url":"/python/html6/menu_attr_pair/1000/257000000/257999000/menu_attr_pair_multiple_1_1_2f60c1bab8.html"},{"name":"qtyInStock","values":[{"value":"-2","url":"/python/html6/menu_attr_pair/1000/214000000/214475000/menu_attr_pair_qtyInStock_2_1_6d3cb449ce.html"}],"name_url":"/python/html6/menu_attr_pair/1000/214000000/214475000/menu_attr_pair_qtyInStock_2_1_6d3cb449ce.html"},{"name":"SKU","values":[{"value":"7AG224","url":"/python/html6/menu_attr_pair/1000/97000000/97568000/menu_attr_pair_SKU_7AG224_1_1a7115b27b.html"}],"name_url":"/python/html6/menu_attr_pair/1000/97000000/97568000/menu_attr_pair_SKU_7AG224_1_1a7115b27b.html"},{"name":"tierMinQty1","values":[{"value":"1","url":"/python/html6/menu_attr_pair/1000/226000000/226987000/menu_attr_pair_tierMinQty1_1_1_974840705d.html"}],"name_url":"/python/html6/menu_attr_pair/1000/226000000/226987000/menu_attr_pair_tierMinQty1_1_1_974840705d.html"},{"name":"tierPrice1","values":[{"value":"228.78","url":"/python/html6/menu_attr_pair/1000/108000000/108187000/menu_attr_pair_tierPrice1_22878_1_b722a33d92.html"}],"name_url":"/python/html6/menu_attr_pair/1000/108000000/108187000/menu_attr_pair_tierPrice1_22878_1_b722a33d92.html"},{"name":"Manufacturer Part Number","values":[{"value":"QSFP40GESR4E","url":"/python/html6/menu_attr_pair/1000/138000000/138329000/menu_attr_pair_ManufacturerPartNumber_QSFP40GESR4E_1_50d8b3e9d2.html"}],"name_url":"/python/html6/menu_attr_pair/1000/138000000/138329000/menu_attr_pair_ManufacturerPartNumber_QSFP40GESR4E_1_50d8b3e9d2.html"},{"name":"Manufacturer Website Address","values":[{"value":"http://www.startech.com","url":"/python/html6/menu_attr_pair/1000/231000000/231334000/menu_attr_pair_ManufacturerWebsiteAddress_httpwwwstartechcom_1_6448b64a76.html"}],"name_url":"/python/html6/menu_attr_pair/1000/231000000/231334000/menu_attr_pair_ManufacturerWebsiteAddress_httpwwwstartechcom_1_6448b64a76.html"},{"name":"Brand Name","values":[{"value":"StarTech.com","url":"/python/html6/menu_attr_pair/1000/53000000/53567000/menu_attr_pair_BrandName_StarTechcom_1_30dd34fba4.html"}],"name_url":"/python/html6/menu_attr_pair/1000/53000000/53567000/menu_attr_pair_BrandName_StarTechcom_1_30dd34fba4.html"},{"name":"Product Name","values":[{"value":"Dell EMC QSFP-40G-ESR4 Compatible QSFP+ Transceiver Module - 40GBase-SR4","url":"/python/html6/menu_attr_pair/1000/108000000/108124000/menu_attr_pair_ProductName_DellEMCQSFP40GESR4CompatibleQSFPTransceive_1_48749fff76.html"}],"name_url":"/python/html6/menu_attr_pair/1000/108000000/108124000/menu_attr_pair_ProductName_DellEMCQSFP40GESR4CompatibleQSFPTransceive_1_48749fff76.html"},{"name":"Packaged Quantity","values":[{"value":"1","url":"/python/html6/menu_attr_pair/1000/105000000/105681000/menu_attr_pair_PackagedQuantity_1_1_9040483ba6.html"}],"name_url":"/python/html6/menu_attr_pair/1000/105000000/105681000/menu_attr_pair_PackagedQuantity_1_1_9040483ba6.html"},{"name":"Product Type","values":[{"value":"QSFP+","url":"/python/html6/menu_attr_pair/1000/236000000/236843000/menu_attr_pair_ProductType_QSFP_1_36e92cfecf.html"}],"name_url":"/python/html6/menu_attr_pair/1000/236000000/236843000/menu_attr_pair_ProductType_QSFP_1_36e92cfecf.html"},{"name":"Application/Usage","values":[{"value":"Optical Network, Data Networking","url":"/python/html6/menu_attr_pair/1000/224000000/224609000/menu_attr_pair_ApplicationUsage_OpticalNetworkDataNetworking_1_85da4f4b8c.html"}],"name_url":"/python/html6/menu_attr_pair/1000/224000000/224609000/menu_attr_pair_ApplicationUsage_OpticalNetworkDataNetworking_1_85da4f4b8c.html"},{"name":"Total Number of Ports","values":[{"value":"1","url":"/python/html6/menu_attr_pair/1000/95000000/95284000/menu_attr_pair_TotalNumberofPorts_1_1_7bc035a5a9.html"}],"name_url":"/python/html6/menu_attr_pair/1000/95000000/95284000/menu_attr_pair_TotalNumberofPorts_1_1_7bc035a5a9.html"},{"name":"Connector Type","values":[{"value":"MPO","url":"/python/html6/menu_attr_pair/1000/72000000/72441000/menu_attr_pair_ConnectorType_MPO_1_65e9f75be6.html"}],"name_url":"/python/html6/menu_attr_pair/1000/72000000/72441000/menu_attr_pair_ConnectorType_MPO_1_65e9f75be6.html"},{"name":"Interfaces/Ports Details","values":[{"value":"1 x MPO Duplex 40GBase-SR4 Network","url":"/python/html6/menu_attr_pair/1000/100000000/100635000/menu_attr_pair_InterfacesPortsDetails_1xMPODuplex40GBaseSR4Network_1_58baeec4a6.html"}],"name_url":"/python/html6/menu_attr_pair/1000/100000000/100635000/menu_attr_pair_InterfacesPortsDetails_1xMPODuplex40GBaseSR4Network_1_58baeec4a6.html"},{"name":"Media Type Supported","values":[{"value":"Optical Fiber","url":"/python/html6/menu_attr_pair/1000/76000000/76660000/menu_attr_pair_MediaTypeSupported_OpticalFiber_1_71ecacd2d7.html"}],"name_url":"/python/html6/menu_attr_pair/1000/76000000/76660000/menu_attr_pair_MediaTypeSupported_OpticalFiber_1_71ecacd2d7.html"},{"name":"Fiber Mode Supported","values":[{"value":"Multi-mode","url":"/python/html6/menu_attr_pair/1000/121000000/121984000/menu_attr_pair_FiberModeSupported_Multimode_1_a5ef8c99ff.html"}],"name_url":"/python/html6/menu_attr_pair/1000/121000000/121984000/menu_attr_pair_FiberModeSupported_Multimode_1_a5ef8c99ff.html"},{"name":"Ethernet Technology","values":[{"value":"40 Gigabit Ethernet","url":"/python/html6/menu_attr_pair/1000/75000000/75245000/menu_attr_pair_EthernetTechnology_40GigabitEthernet_1_838826614f.html"}],"name_url":"/python/html6/menu_attr_pair/1000/75000000/75245000/menu_attr_pair_EthernetTechnology_40GigabitEthernet_1_838826614f.html"},{"name":"Network Technology","values":[{"value":"40GBase-SR4","url":"/python/html6/menu_attr_pair/1000/251000000/251825000/menu_attr_pair_NetworkTechnology_40GBaseSR4_1_b1f66e8f22.html"}],"name_url":"/python/html6/menu_attr_pair/1000/251000000/251825000/menu_attr_pair_NetworkTechnology_40GBaseSR4_1_b1f66e8f22.html"},{"name":"Form Factor","values":[{"value":"Hot-swappable","url":"/python/html6/menu_attr_pair/1000/228000000/228377000/menu_attr_pair_FormFactor_Hotswappable_1_846a958c41.html"}],"name_url":"/python/html6/menu_attr_pair/1000/228000000/228377000/menu_attr_pair_FormFactor_Hotswappable_1_846a958c41.html"},{"name":"Compatibility","values":[{"value":"MSA Compliant","url":"/python/html6/menu_attr_pair/1000/168000000/168373000/menu_attr_pair_Compatibility_MSACompliant_1_bc0fb5ce4d.html"}],"name_url":"/python/html6/menu_attr_pair/1000/168000000/168373000/menu_attr_pair_Compatibility_MSACompliant_1_bc0fb5ce4d.html"},{"name":"Environmentally Friendly","values":[{"value":"Yes","url":"/python/html6/menu_attr_pair/1000/189000000/189260000/menu_attr_pair_EnvironmentallyFriendly_Yes_1_93f9d9a3be.html"}],"name_url":"/python/html6/menu_attr_pair/1000/189000000/189260000/menu_attr_pair_EnvironmentallyFriendly_Yes_1_93f9d9a3be.html"},{"name":"Environmental Certification","values":[{"value":"REACH, RoHS, WEEE","url":"/python/html6/menu_attr_pair/1000/171000000/171975000/menu_attr_pair_EnvironmentalCertification_REACHRoHSWEEE_1_2352cde6b8.html"}],"name_url":"/python/html6/menu_attr_pair/1000/171000000/171975000/menu_attr_pair_EnvironmentalCertification_REACHRoHSWEEE_1_2352cde6b8.html"},{"name":"Country of Origin","values":[{"value":"China","url":"/python/html6/menu_attr_pair/1000/59000000/59441000/menu_attr_pair_CountryofOrigin_China_1_8e2a0a3f06.html"}],"name_url":"/python/html6/menu_attr_pair/1000/59000000/59441000/menu_attr_pair_CountryofOrigin_China_1_8e2a0a3f06.html"},{"name":"Limited Warranty","values":[{"value":"Lifetime","url":"/python/html6/menu_attr_pair/1000/114000000/114240000/menu_attr_pair_LimitedWarranty_Lifetime_1_00c2473951.html"}],"name_url":"/python/html6/menu_attr_pair/1000/114000000/114240000/menu_attr_pair_LimitedWarranty_Lifetime_1_00c2473951.html"}],"images":[],"distributors":[{"name":"PCNation","sku":"7AG224","url":"https://www.pcnation.com/web/details/7AG224/startech-com-dell-emc-qsfp-40g-esr4-compatible-qsfp-plus-module-40gbase-sr4-fiber-optical-transceiver-qsfp40gesr4e-qsfp40gesr4e-00065030884242","pricing":[{"quantity":1,"price_usd":228.78}],"stock":{"available":false,"quantity":null,"lead_time_days":null},"moq":1,"multiple":1,"image":"https://content.etilize.com/Left/1061213381.jpg"},{"name":"Allied Electronics","sku":"72012318","url":"https://www.alliedelec.com/product/startech-com/qsfp40gesr4e/72012318/","pricing":[],"stock":{"available":false,"quantity":null,"lead_time_days":null},"moq":1,"multiple":1},{"name":"Grand and Toy","sku":"QSFP40GESR4E","url":"https://www.grandandtoy.com/en/product/SY6459927_StarTech_com_Dell_EMC_QSFP-40G-ESR4_Compatible_QSFP_Module%2c_40GBASE-SR4%2c_40GbE_Multimode_Fiber_MMF_Optic_Transceiver%2c_40GE_Gigabit_Ethernet_QSFP%2c_MPO_.aspx","pricing":[],"stock":{"available":false,"quantity":null,"lead_time_days":null},"moq":1,"multiple":1,"image":"https://www.grandandtoy.com/graphics/jh/c29/76/29768F09-D453-4ECA-9F50-1304ED1521CE.jpg"},{"name":"Zoro","sku":"G2979447","url":"https://www.zoro.com/startechcom-qsfp-40g-esr4-qsfp-plus-mm-qsfp40gesr4e/i/G2979447/","pricing":[{"quantity":1,"price_usd":372.24}],"stock":{"available":false,"quantity":null,"lead_time_days":null},"moq":1,"multiple":1,"image":"https://www.dataalchemy.com/python/getu/1312d194-8a97-4385-a84f-21ce86b2a3d1"},{"name":"Consutronix","sku":"7AG224","url":"https://www.consutronix.com/7AG224.html","pricing":[{"quantity":1,"price_usd":189.11}],"stock":{"available":false,"quantity":null,"lead_time_days":null},"moq":1,"multiple":1,"image":"https://www.dataalchemy.com/python/getu/c072f645-cdb5-475c-833d-d1f91cf11e30"},{"name":"unbeatablesale.com","sku":"SYBA165787","url":"https://www.unbeatablesale.com/syba165787.html","pricing":[{"quantity":1,"price_usd":248.72}],"stock":{"available":false,"quantity":null,"lead_time_days":null},"moq":1,"multiple":1,"image":"https://site.unbeatablesale.com/SYBA165787.JPG"},{"name":"barcodesinc.com","sku":"QSFP40GESR4E","url":"https://www.barcodesinc.com/startech/part-qsfp40gesr4e.htm","pricing":[{"quantity":1,"price_usd":302.0}],"stock":{"available":false,"quantity":null,"lead_time_days":null},"moq":1,"multiple":1},{"name":"homeessentialsdirect.com","sku":"QSFP40GESR4E","url":"https://www.homeessentialsdirect.com/startech-com-qsfp40gesr4e-dell-emc-qsfp-40g-esr4-compatible-qsfp-40gbase-sr4-40gbps-40gbe-module-40/","pricing":[{"quantity":1,"price_usd":206.95}],"stock":{"available":false,"quantity":null,"lead_time_days":null},"moq":1,"multiple":1,"image":"https://cdn11.bigcommerce.com/s-gcx1wi/products/2521280/images/2099296/apisywwjo__15200.1626347033.300.250.jpg?c=2"},{"name":"us.rs-online.com","sku":"72012318","url":"https://us.rs-online.com/product/startech-com/qsfp40gesr4e/72012318/","pricing":[{"quantity":1,"price_usd":392.79}],"stock":{"available":false,"quantity":null,"lead_time_days":null},"moq":1,"multiple":1},{"name":"Office Crave","sku":"STCQSFP40GESR4E","url":"https://www.officecrave.com/startech-dell-emc-qsfp-40g-esr4-compatible-qsfp-module-40gbase-sr4-40ge-qsfp-40gbe-multimode-fiber-mmf-optic-transceiver-400m-ddm-qsfp40gesr4e.html","pricing":[{"quantity":1,"price_usd":178.88}],"stock":{"available":false,"quantity":null,"lead_time_days":null},"moq":1,"multiple":1,"image":"https://www.dataalchemy.com/python/getu/a6235ae8-14f4-4699-8525-7fad46625538"}],"amazon":{"available":false,"products":[]},"metadata":{"generated_date":"2026-09-16","last_updated":"2026-09-16","data_sources":["Allied Electronics","Consutronix","Grand and Toy","Office Crave","PCNation","Zoro","barcodesinc.com","homeessentialsdirect.com","unbeatablesale.com","us.rs-online.com"],"completeness":0.85,"version":"1.2"}}},"pagination":null,"nav":{"home":"/python/html6/index.html","brands":"/python/html6/menu_brand_index/menu_brand_index_brands_87101ba214.html","parts":"/python/html6/menu_part_index/menu_part_index_parts_909e6bf0ca.html","attributes":"/python/html6/menu_attr_index/menu_attr_index_attributes_d7f67a250d.html"}}