{"product_id":"at-2911sfp-2-network-adapter-pcie-sfp-nic-with-vlan-lacp","title":"At-2911SFP\/2 Network Adapter - PCIe SFP NIC with VLAN \u0026 LACP","description":"\u003cp\u003eIn this review the At-2911SFP\/2 network adapter is assessed for small servers and workstation upgrades that need reliable SFP connectivity and predictable switching behavior. The reviewer found it best for administrators who value hardware that supports advanced switching features such as \u003cstrong\u003eVLAN support\u003c\/strong\u003e and \u003cstrong\u003eLink Aggregation LACP\u003c\/strong\u003e while keeping energy use low thanks to a PCI Express X1 design. The single biggest reason to buy is stable, standards-oriented connectivity with built-in failover and jumbo frame handling that integrates cleanly into managed switch environments.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003ePCIe X1 design:\u003c\/strong\u003e Provides efficient bus usage and lower power draw while delivering the bandwidth needed for single-port SFP links in most server or edge setups.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVLAN support:\u003c\/strong\u003e Lets administrators segment traffic at the NIC level for improved security and traffic management without relying solely on the switch.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLink Aggregation LACP:\u003c\/strong\u003e Enables bonding multiple links for higher throughput or redundancy when paired with compatible switches, improving resilience and capacity.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFailover advanced properties:\u003c\/strong\u003e Offers automatic path switching to a standby link on supported setups, reducing downtime during link faults.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eJumbo frames:\u003c\/strong\u003e Supports larger Ethernet frames to reduce CPU overhead and improve throughput on high-performance LANs and storage networks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe At-2911SFP\/2 is targeted at network engineers, small data center operators, and IT professionals who need a compact SFP-capable NIC with managed-switch features. It is a practical choice when adding fiber or SFP-based copper uplinks to a server or appliance where power efficiency and standards compatibility matter.\u003c\/p\u003e\n\u003cp\u003eThose who need multi-port 10GbE, integrated switch fabrics, or on-board CPU offload beyond basic link features should look at higher-end adapters; this card is focused on solid single-link performance and managed-switch interoperability rather than extreme throughput or advanced offload engines.\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\u003eSupports \u003cstrong\u003eVLAN tagging\u003c\/strong\u003e and LACP for easy integration with managed networks.\u003c\/li\u003e\n \u003cli\u003eLow power PCIe X1 form factor useful for dense chassis or low-power servers.\u003c\/li\u003e\n \u003cli\u003eJumbo frame and failover support improve throughput and uptime in properly configured networks.\u003c\/li\u003e\n \u003cli\u003eWorks well with standard switch features, making deployment predictable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eSingle-port SFP and PCIe X1 design limit raw bandwidth compared with multi-port or x8\/x16 adapters.\u003c\/li\u003e\n \u003cli\u003eNot intended for users who require advanced hardware offload beyond link and VLAN features.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eProduct name\u003c\/td\u003e\n\u003ctd\u003eAt-2911SFP\/2 Network Adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003ePCI Express X1\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eConnectivity\u003c\/td\u003e\n\u003ctd\u003eSFP port (single link support)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eSwitching features\u003c\/td\u003e\n\u003ctd\u003eVLAN support, Link Aggregation LACP\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eAdvanced properties\u003c\/td\u003e\n\u003ctd\u003eFailover support, Jumbo frames\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTarget use\u003c\/td\u003e\n\u003ctd\u003eInternal network card for servers and workstations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe At-2911SFP\/2 is a sensible, no-frills SFP NIC for administrators who need VLAN and LACP support in a low-power PCIe X1 card. It delivers predictable behavior with failover and jumbo frame support, making it good value for small servers and edge appliances where single-link SFP connectivity and managed switch compatibility are the priority.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this card support VLAN tagging?\u003c\/strong\u003e\u003cbr\u003eYes. The adapter supports VLAN features so it can participate in segmented networks when paired with a compatible switch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use link aggregation with this model?\u003c\/strong\u003e\u003cbr\u003eYes. The At-2911SFP\/2 supports Link Aggregation LACP for bonding with compatible switch ports to increase throughput or provide redundancy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this a high-power or energy efficient card?\u003c\/strong\u003e\u003cbr\u003eIts PCIe X1 design emphasizes bus efficiency and lower power consumption compared with larger PCIe form factors.\u003c\/p\u003e","brand":"Allied Telesis","offers":[{"title":"Default Title","offer_id":48655268806875,"sku":"B00H9LBVJM","price":123.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61RCmvVWPdL._AC_SL1500.jpg?v=1778544416","url":"https:\/\/gearmusthave.com\/products\/at-2911sfp-2-network-adapter-pcie-sfp-nic-with-vlan-lacp","provider":"GearMustHave","version":"1.0","type":"link"}