{"product_id":"efs-04d12m-dc-12v-40mm-2-wire-server-cooling-fan","title":"EFS-04D12M DC 12V 40mm 2-Wire Server Cooling Fan 40x40x20","description":"\n\u003ch2\u003eEFS-04D12M DC 12V Server Cooling Fan – Compact 40mm Reliable Airflow\u003c\/h2\u003e\n\u003cp\u003eKeep your server, PC, or electronics running cool and efficient with the \u003cstrong\u003eEFS-04D12M DC 12V Cooling Fan\u003c\/strong\u003e. This compact \u003cstrong\u003e40×40×20mm axial fan\u003c\/strong\u003e is engineered for consistent, quiet airflow in tight spaces — perfect for servers, desktop PCs, networking equipment, 3D printers, amplifiers, and DIY electronics projects. With a simple \u003cstrong\u003e2-wire connection\u003c\/strong\u003e and low 0.12A current draw, installation is straightforward and power consumption is minimal.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e EFS-04D12M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e DC 12V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent:\u003c\/strong\u003e 0.12A (low power draw)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 40 × 40 × 20mm – slim, space-saving profile\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e 2-wire (simple plug-and-play installation)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Servers, desktop PCs, network switches, DIY electronics, 3D printers, and amplifiers\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEfficient Airflow:\u003c\/strong\u003e Moves air continuously to prevent heat build-up in enclosed enclosures\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built for sustained operation in demanding environments\u003c\/li\u003e\n  \u003cli\u003e\u003cstrong\u003eMade in Mainland China\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose This Cooling Fan?\u003c\/h3\u003e\n\u003cp\u003eThermal management is critical for the longevity and performance of electronics. The EFS-04D12M's compact 40mm form factor fits standard fan mounting points found on server chassis, PC cases, and electronics enclosures. Its low current draw means it won't strain your power supply, while its steady airflow keeps components at optimal operating temperatures. The 2-wire design makes wiring hassle-free — ideal for hobbyists and professionals alike.\u003c\/p\u003e\n\n\u003ch3\u003eIdeal For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eServer rack cooling\u003c\/li\u003e\n  \u003cli\u003eDesktop PC case ventilation\u003c\/li\u003e\n  \u003cli\u003eNetwork switches and routers\u003c\/li\u003e\n  \u003cli\u003e3D printer electronics cooling\u003c\/li\u003e\n  \u003cli\u003eDIY electronics and maker projects\u003c\/li\u003e\n  \u003cli\u003eAmplifiers and AV equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-channel-relay-module-dc-3-3v-24v-optocoupler-arduino\"\u003e1-Channel Relay Module DC 3.3V–24V Optocoupler for Arduino\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-channel-scr-solid-state-relay-switch-module-dc3-24v-40a-optocoupler\"\u003e1-Channel SCR Solid State Relay Module DC3-24V 40A Optocoupler\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/hdmi-av-to-rf-modulator-1-channel-pal-ntsc-secam-catv-hotel\"\u003e1-Channel HDMI \u0026amp; AV to RF Modulator – PAL\/NTSC CATV Hotel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor general guidance on electronics cooling and thermal management best practices, visit the U.S. Department of Energy – Cooling Systems Resource.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Fan_%28machine%29\" target=\"_blank\" rel=\"noopener\"\u003eFan (machine)\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What devices is the EFS-04D12M 40mm cooling fan compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The EFS-04D12M is compatible with any device that accepts a standard 40×40×20mm axial fan running on DC 12V. This includes servers, desktop PC cases, network switches, routers, 3D printers, amplifiers, and a wide range of DIY electronics enclosures.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I connect the 2-wire cooling fan?\u003c\/h4\u003e\n\u003cp\u003eA: The 2-wire design features a positive (+) and negative (–) wire. Simply connect them to a DC 12V power source — red to positive and black to negative. No additional speed controller or tachometer wire is needed for basic operation, making installation quick and straightforward.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the power consumption of this fan?\u003c\/h4\u003e\n\u003cp\u003eA: This fan draws only 0.12A at 12V DC, giving it an extremely low power consumption of approximately 1.44 watts. This minimal draw means it will not place significant load on your power supply, even when running continuously.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this fan suitable for continuous 24\/7 operation?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The EFS-04D12M is built with durable construction intended for sustained, continuous use in demanding environments such as server racks and always-on electronics enclosures.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What devices is the EFS-04D12M 40mm cooling fan compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The EFS-04D12M is compatible with any device that accepts a standard 40×40×20mm axial fan running on DC 12V. This includes servers, desktop PC cases, network switches, routers, 3D printers, amplifiers, and a wide range of DIY electronics enclosures.\"}}, {\"@type\": \"Question\", \"name\": \"How do I connect the 2-wire cooling fan?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 2-wire design features a positive (+) and negative (–) wire. Simply connect them to a DC 12V power source — red to positive and black to negative. No additional speed controller or tachometer wire is needed for basic operation, making installation quick and straightforward.\"}}, {\"@type\": \"Question\", \"name\": \"What is the power consumption of this fan?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This fan draws only 0.12A at 12V DC, giving it an extremely low power consumption of approximately 1.44 watts. This minimal draw means it will not place significant load on your power supply, even when running continuously.\"}}, {\"@type\": \"Question\", \"name\": \"Is this fan suitable for continuous 24\/7 operation?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The EFS-04D12M is built with durable construction intended for sustained, continuous use in demanding environments such as server racks and always-on electronics enclosures.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/oasis-select.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Electronics \u0026 Tech\", \"item\": \"https:\/\/oasis-select.com\/collections\/electronics-tech\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"EFS-04D12M DC 12V 40mm 2-Wire Server Cooling Fan 40x40x20\", \"item\": \"https:\/\/oasis-select.com\/products\/efs-04d12m-dc-12v-40mm-2-wire-server-cooling-fan\"}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"Default Title","offer_id":47745022558313,"sku":"\u003cnone\u003e","price":47.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/Sae0eae7c9dd9424393cd28f020b72612H.webp?v=1783029983","url":"https:\/\/oasis-select.com\/products\/efs-04d12m-dc-12v-40mm-2-wire-server-cooling-fan","provider":"Oasis Select","version":"1.0","type":"link"}