{"product_id":"d-link-dem-qx01q-sr4","title":"D-Link DEM-QX01Q-SR4 40GBASE-SR4 QSFP+ Multi-Mode Transceiver","description":"\u003cdiv id=\"ace-d-link-dem-qx01q-sr4-copy\"\u003e\n\u003cstyle\u003e\n#ace-d-link-dem-qx01q-sr4-copy { font-family: inherit; color: inherit; }\n\/* Reuses the current ACE calculator FAQ disclosure treatment. Scope: this product FAQ only. *\/\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq { --ace-family-ink: #21352b; --ace-family-muted: #5b6961; --ace-family-line: #d3d9d5; --ace-family-soft: #f4f7f4; margin: 24px 0; padding: 0; background: transparent; font-family: inherit; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq details.ace-form-disclosure { margin: 0 0 12px; padding: 0; border: 1px solid var(--ace-family-line); border-radius: 12px; background: #fff; overflow: visible; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq details \u003e summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 56px; margin: 0; padding: 16px 20px; border-radius: 12px; background: var(--ace-family-soft); color: var(--ace-family-ink); font: inherit; font-size: 16px; font-weight: 600; line-height: 1.4; list-style: none; cursor: pointer; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq summary::-webkit-details-marker { display: none; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq summary::marker { content: ''; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq summary::before, #ace-d-link-dem-qx01q-sr4-copy .ace-article-faq summary::after { content: none; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq details[open] \u003e summary { border-radius: 12px 12px 0 0; border-bottom: 0; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq h3.ace-form-title { display: flex; align-items: center; justify-content: space-between; gap: 16px; width: 100%; min-width: 0; margin: 0 !important; padding: 0; color: var(--ace-family-ink); font-family: inherit; font-size: 16px; font-weight: 600; line-height: 1.35; letter-spacing: normal; text-transform: none; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq .ace-form-title-text { display: flex; flex: 1 1 auto; min-width: 0; margin: 0; overflow-wrap: anywhere; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq .ace-form-toggle { display: inline-flex; align-items: center; gap: 10px; flex: 0 0 auto; margin: 0 0 0 auto; padding: 0; color: #55605a; font-size: 12px; line-height: 1.4; font-weight: 500; white-space: nowrap; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq details \u003e summary .ace-form-collapse { display: none; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq details[open] \u003e summary .ace-form-expand { display: none; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq details[open] \u003e summary .ace-form-collapse { display: inline; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq .ace-form-chevron { display: inline-block; width: 8px; height: 8px; margin: 0 2px 4px; border-bottom: 2px solid currentColor; border-right: 2px solid currentColor; transform: rotate(45deg); transition: transform .15s ease; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq details[open] \u003e summary .ace-form-chevron { transform: rotate(225deg); margin-bottom: 0; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq .ace-form-body { margin: 0; padding: 20px; min-width: 0; color: var(--ace-family-ink); font-size: 15px; line-height: 1.65; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq .ace-form-body \u003e p { margin: 0; line-height: 1.65; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq summary:focus-visible { outline: 3px solid #24731a; outline-offset: 3px; }\n@media (max-width: 640px) {\n  #ace-d-link-dem-qx01q-sr4-copy .ace-article-faq details \u003e summary { padding: 14px 16px; gap: 12px; }\n  #ace-d-link-dem-qx01q-sr4-copy .ace-article-faq h3.ace-form-title { gap: 12px; }\n  #ace-d-link-dem-qx01q-sr4-copy .ace-article-faq .ace-form-body { padding: 16px; }\n  #ace-d-link-dem-qx01q-sr4-copy .ace-article-faq .ace-form-toggle { font-size: 11px; gap: 8px; }\n}\n@media (prefers-reduced-motion: reduce) { #ace-d-link-dem-qx01q-sr4-copy .ace-article-faq .ace-form-chevron { transition: none; } }\n\n\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq { width:100%; max-width:100%; box-sizing:border-box; }\n#ace-d-link-dem-qx01q-sr4-copy .ace-article-faq .ace-form-body { border:0; box-shadow:none; }\n\u003c\/style\u003e\n\u003ch2\u003eA Clear Optical Path for High-Speed Connections\u003c\/h2\u003e\n\u003cp\u003eThe DEM-QX01Q-SR4 adds a 40GBASE-SR4 connection to a compatible QSFP+ host port. It is designed for multimode fibre links in business, aggregation and data-centre networks. An MPO connection and 40 Gbps interface keep the required host and cable choice clear.\u003c\/p\u003e\n\u003cp\u003eThe specified link reach is OM3 100 m; OM4 150 m. Match the fibre grade, connectors, optical standard and remote module before installation. A physically fitting module alone does not establish host compatibility or an operational link.\u003c\/p\u003e\n\u003ch2\u003eHighlights\u003c\/h2\u003e\n\u003ch3\u003eConnection Standard\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e40GBASE-SR4 at 40 Gbps.\u003c\/li\u003e\n\u003cli\u003eQSFP+ module with MPO connector.\u003c\/li\u003e\n\u003cli\u003eOM3 100 m; OM4 150 m.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLink Requirements\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMultimode fibre; parallel-fibre MPO connection.\u003c\/li\u003e\n\u003cli\u003e850 nm.\u003c\/li\u003e\n\u003cli\u003eCompatible host port and supported module revision required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHot-pluggable design in a supported host.\u003c\/li\u003e\n\u003cli\u003eMatch both ends and test the completed link.\u003c\/li\u003e\n\u003cli\u003e5-year warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003ch3\u003eChoose the Correct Host Interface\u003c\/h3\u003e\n\u003cp\u003eThis module uses the QSFP+ form factor and the 40GBASE-SR4 connection standard. Check the host’s exact compatibility list, supported speed and hardware revision. Similar-looking SFP, SFP+, QSFP+ and QSFP28 modules are not automatically interchangeable.\u003c\/p\u003e\n\u003ch3\u003eMatch the Cable to the Link\u003c\/h3\u003e\n\u003cp\u003eThe MPO interface requires multimode cabling. SR4 carries parallel optical lanes, so confirm the MPO fibre count, polarity and end-face arrangement for the complete link. A standard duplex LC lead is not the correct connection.\u003c\/p\u003e\n\u003ch3\u003ePlan the Required Distance\u003c\/h3\u003e\n\u003cp\u003eThe published reach is OM3 100 m; OM4 150 m. The stated maximum depends on the specified fibre grade and acceptable link loss. Patch panels, connectors and cable condition affect the optical path, so validate the total link rather than relying on distance alone.\u003c\/p\u003e\n\u003ch3\u003eMake Maintenance More Practical\u003c\/h3\u003e\n\u003cp\u003eHot-pluggable construction allows a supported host to accept or release the module without powering down the chassis. Removing the module still interrupts the link that uses it. Schedule the work and provide a tested alternate path where that connection is carrying production traffic.\u003c\/p\u003e\n\u003ch3\u003eCheck the Complete Pair\u003c\/h3\u003e\n\u003cp\u003eThe remote connection must support 40GBASE-SR4 at the intended speed. Match the optical standard and fibre system at both ends, keep connectors clean and protect unused ports with their caps. Do not connect incompatible wavelengths or fibre types simply because the module fits.\u003c\/p\u003e\n\u003ch3\u003eInstall Within the Host Limits\u003c\/h3\u003e\n\u003cp\u003eThe module operating range is 0°C to 70°C. Ensure the host provides the specified power, ventilation and supported firmware. Choose industrial-rated optics separately when an installation needs temperatures outside this commercial operating range.\u003c\/p\u003e\n\u003ch2\u003eSummary\u003c\/h2\u003e\n\u003cp\u003eThe DEM-QX01Q-SR4 provides a focused 40GBASE-SR4 connection for a compatible QSFP+ host. Specify the correct fibre, connectors and remote optic with the module to build a link that suits the installation.\u003c\/p\u003e\n\u003csection class=\"ace-article-faq\" aria-label=\"Frequently asked questions\"\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails class=\"ace-form-disclosure\" open\u003e\u003csummary\u003e\u003ch3 class=\"ace-form-title\"\u003e\n\u003cspan class=\"ace-form-title-text\"\u003eWill It Work in Any Similar-Looking Slot?\u003c\/span\u003e\u003cspan class=\"ace-form-toggle\" aria-hidden=\"true\"\u003e\u003cspan class=\"ace-form-expand\"\u003eExpand\u003c\/span\u003e\u003cspan class=\"ace-form-collapse\"\u003eCollapse\u003c\/span\u003e\u003cspan class=\"ace-form-chevron\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\u003c\/summary\u003e\u003cdiv class=\"ace-form-body\"\u003e\u003cp\u003eNo. The host must explicitly support this QSFP+ module, connection standard, speed and hardware revision. Check the switch or adapter compatibility list before ordering.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"ace-form-disclosure\"\u003e\u003csummary\u003e\u003ch3 class=\"ace-form-title\"\u003e\n\u003cspan class=\"ace-form-title-text\"\u003eWhich Cable Does It Need?\u003c\/span\u003e\u003cspan class=\"ace-form-toggle\" aria-hidden=\"true\"\u003e\u003cspan class=\"ace-form-expand\"\u003eExpand\u003c\/span\u003e\u003cspan class=\"ace-form-collapse\"\u003eCollapse\u003c\/span\u003e\u003cspan class=\"ace-form-chevron\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\u003c\/summary\u003e\u003cdiv class=\"ace-form-body\"\u003e\u003cp\u003eUse multimode fibre with MPO connections. For SR4, confirm MPO fibre count and polarity across the complete path.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"ace-form-disclosure\"\u003e\u003csummary\u003e\u003ch3 class=\"ace-form-title\"\u003e\n\u003cspan class=\"ace-form-title-text\"\u003eWhat Is the Maximum Link Distance?\u003c\/span\u003e\u003cspan class=\"ace-form-toggle\" aria-hidden=\"true\"\u003e\u003cspan class=\"ace-form-expand\"\u003eExpand\u003c\/span\u003e\u003cspan class=\"ace-form-collapse\"\u003eCollapse\u003c\/span\u003e\u003cspan class=\"ace-form-chevron\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\u003c\/summary\u003e\u003cdiv class=\"ace-form-body\"\u003e\u003cp\u003eOM3 100 m; OM4 150 m. This assumes the specified cable or fibre grade and a link within the permitted loss and installation requirements.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"ace-form-disclosure\"\u003e\u003csummary\u003e\u003ch3 class=\"ace-form-title\"\u003e\n\u003cspan class=\"ace-form-title-text\"\u003eCan It Be Fitted Without Turning Off the Switch?\u003c\/span\u003e\u003cspan class=\"ace-form-toggle\" aria-hidden=\"true\"\u003e\u003cspan class=\"ace-form-expand\"\u003eExpand\u003c\/span\u003e\u003cspan class=\"ace-form-collapse\"\u003eCollapse\u003c\/span\u003e\u003cspan class=\"ace-form-chevron\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\u003c\/summary\u003e\u003cdiv class=\"ace-form-body\"\u003e\u003cp\u003eThe module is hot-pluggable in a supported host. Fitting or removing it can still interrupt that link, so plan maintenance around the traffic it carries.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"ace-form-disclosure\"\u003e\u003csummary\u003e\u003ch3 class=\"ace-form-title\"\u003e\n\u003cspan class=\"ace-form-title-text\"\u003eCan It Replace a Different Optical Standard?\u003c\/span\u003e\u003cspan class=\"ace-form-toggle\" aria-hidden=\"true\"\u003e\u003cspan class=\"ace-form-expand\"\u003eExpand\u003c\/span\u003e\u003cspan class=\"ace-form-collapse\"\u003eCollapse\u003c\/span\u003e\u003cspan class=\"ace-form-chevron\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\u003c\/summary\u003e\u003cdiv class=\"ace-form-body\"\u003e\u003cp\u003eDo not assume so. This is a 40GBASE-SR4 optic. Match the remote standard, fibre type and connectors; another module with the same shape may use a different optical system.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails class=\"ace-form-disclosure\"\u003e\u003csummary\u003e\u003ch3 class=\"ace-form-title\"\u003e\n\u003cspan class=\"ace-form-title-text\"\u003eAre Connection Cables Included?\u003c\/span\u003e\u003cspan class=\"ace-form-toggle\" aria-hidden=\"true\"\u003e\u003cspan class=\"ace-form-expand\"\u003eExpand\u003c\/span\u003e\u003cspan class=\"ace-form-collapse\"\u003eCollapse\u003c\/span\u003e\u003cspan class=\"ace-form-chevron\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\u003c\/summary\u003e\u003cdiv class=\"ace-form-body\"\u003e\u003cp\u003eNo cable is included in this transceiver offer. Select the required cable or fibre patching separately. Protect and clean fibre connectors before commissioning the link.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"D-Link","offers":[{"title":"Default Title","offer_id":44849071751227,"sku":"DEM-QX01Q-SR4","price":269.13,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/4541\/3179\/files\/d-link-dem-qx01q-sr4-40gbase-sr4-qsfp-multi-mode-transceiver-1454775.png?v=1793693900","url":"https:\/\/aceperipherals.com\/fil\/products\/d-link-dem-qx01q-sr4","provider":"ACE Peripherals","version":"1.0","type":"link"}