{"id":42799,"date":"2026-09-08T05:47:17","date_gmt":"2026-09-08T05:47:17","guid":{"rendered":"https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/"},"modified":"2026-09-08T05:47:30","modified_gmt":"2026-09-08T05:47:30","slug":"867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2","status":"publish","type":"product","link":"http:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/","title":{"rendered":"867328-B21 HPE 621SFP28 Network Adapter 25 Gigabit SFP28 x 2"},"content":{"rendered":"<p>867328-B21 Technical Specifications<\/p>\n<p>HPE 621SFP28 Network Adapter 25 Gigabit SFP28 x 2<\/p>\n<p>Brand: HPE<\/p>\n<p>Manufacture Part Number: 867328-B21<\/p>\n<p>Product Line: HPE<\/p>\n<p>Model: 621SFP28<\/p>\n<p>Manufacturer: HP CTO Server Avnet<\/p>\n<p>Processor<\/p>\n<p>Processor Brand: Cavium<\/p>\n<p>Processor Number: QL41401<\/p>\n<p>Network &#038; Communication<\/p>\n<p>Connectivity Technology: Wired<\/p>\n<p>Data Link Protocols: 10 Gigabit Ethernet, 25 Gigabit Ethernet<\/p>\n<p>Data Transfer Rate: 25 GBps<\/p>\n<p>Form Factor: Plug-in card<\/p>\n<p>Low Profile: Low profile<\/p>\n<p>PCI Specification Revision: PCIe 3.0<\/p>\n<p>Product Type: Network adapter<\/p>\n<p>Remote Management: SNMP<\/p>\n<p>Connectivity<\/p>\n<p>Interface Provided: 2 x 25Gb Ethernet \u2013 SFP28<\/p>\n<p>Port Quantity: 2<\/p>\n<p>Network &#038; Adapter Ports: 25 Gigabit SFP28<\/p>\n<p>Power<\/p>\n<p>Power Consumption Operational: 14.1 watt<\/p>\n<p>Technical Information<\/p>\n<p>Max Operating Temperature: 140 degree Fahrenheit<\/p>\n<p>Min Operating Temperature: 41 degree Fahrenheit<\/p>\n<p>Operating Humidity: 5 \u2013 95% (non-condensing)<\/p>\n<p>Product Information<\/p>\n<p>Capacity: Jumbo frame size: up to 9 KB<\/p>\n<p>Physical Characteristics<\/p>\n<p>Color Category: Silver<\/p>\n","protected":false},"excerpt":{"rendered":"<p>867328-B21 Overview<\/p>\n<p>The HPE Ethernet 10\/25Gb 2-port 621SFP28 Adapter supports 10GbE and 25GbE bandwidth capability which allows more network traffic and speed up network-intensive applications. Compared to a 10G implementation this adapter provides 150% more bandwidth with just a minimal price delta. This adapter has been designed to efficiently deliver high performance and low latency by offloading processing of Ethernet packets on the adapter. Freeing up CPU resources in the host allowing it to do more important tasks.<\/p>\n","protected":false},"featured_media":42800,"comment_status":"closed","ping_status":"open","template":"","meta":{"_acf_changed":false},"product_brand":[1318],"product_cat":[680,5445],"product_tag":[751,4281,682,356],"class_list":["post-42799","product","type-product","status-publish","has-post-thumbnail","product_brand-hpe","product_cat-controllers","product_cat-hpe-controllers","product_tag-10-gigabit-ethernet","product_tag-25-gigabit-ethernet","product_tag-controller-card","product_tag-pci-express","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>867328-B21 HPE 621SFP28 Network Adapter 25 Gigabit SFP28 x 2 - Geek Tech Sol<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"867328-B21 HPE 621SFP28 Network Adapter 25 Gigabit SFP28 x 2 - Geek Tech Sol\" \/>\n<meta property=\"og:description\" content=\"867328-B21 Overview The HPE Ethernet 10\/25Gb 2-port 621SFP28 Adapter supports 10GbE and 25GbE bandwidth capability which allows more network traffic and speed up network-intensive applications. Compared to a 10G implementation this adapter provides 150% more bandwidth with just a minimal price delta. This adapter has been designed to efficiently deliver high performance and low latency by offloading processing of Ethernet packets on the adapter. Freeing up CPU resources in the host allowing it to do more important tasks.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Geek Tech Sol\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-08T05:47:30+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/geektechsol.com\/wp-content\/uploads\/2026\/09\/HPE-867328-B21.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\\\/\",\"url\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\\\/\",\"name\":\"867328-B21 HPE 621SFP28 Network Adapter 25 Gigabit SFP28 x 2 - Geek Tech Sol\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/geektechsol.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\\\/#primaryimage\"},\"thumbnailUrl\":\"http:\\\/\\\/geektechsol.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/HPE-867328-B21.jpg\",\"datePublished\":\"2026-09-08T05:47:17+00:00\",\"dateModified\":\"2026-09-08T05:47:30+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\\\/#primaryimage\",\"url\":\"http:\\\/\\\/geektechsol.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/HPE-867328-B21.jpg\",\"contentUrl\":\"http:\\\/\\\/geektechsol.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/HPE-867328-B21.jpg\",\"width\":800,\"height\":800},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/geektechsol.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/shop\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"867328-B21 HPE 621SFP28 Network Adapter 25 Gigabit SFP28 x 2\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/geektechsol.com\\\/#website\",\"url\":\"https:\\\/\\\/geektechsol.com\\\/\",\"name\":\"Geek Tech Sol\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/geektechsol.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"867328-B21 HPE 621SFP28 Network Adapter 25 Gigabit SFP28 x 2 - Geek Tech Sol","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/","og_locale":"en_US","og_type":"article","og_title":"867328-B21 HPE 621SFP28 Network Adapter 25 Gigabit SFP28 x 2 - Geek Tech Sol","og_description":"867328-B21 Overview The HPE Ethernet 10\/25Gb 2-port 621SFP28 Adapter supports 10GbE and 25GbE bandwidth capability which allows more network traffic and speed up network-intensive applications. Compared to a 10G implementation this adapter provides 150% more bandwidth with just a minimal price delta. This adapter has been designed to efficiently deliver high performance and low latency by offloading processing of Ethernet packets on the adapter. Freeing up CPU resources in the host allowing it to do more important tasks.","og_url":"https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/","og_site_name":"Geek Tech Sol","article_modified_time":"2026-09-08T05:47:30+00:00","og_image":[{"width":800,"height":800,"url":"http:\/\/geektechsol.com\/wp-content\/uploads\/2026\/09\/HPE-867328-B21.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/","url":"https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/","name":"867328-B21 HPE 621SFP28 Network Adapter 25 Gigabit SFP28 x 2 - Geek Tech Sol","isPartOf":{"@id":"https:\/\/geektechsol.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/#primaryimage"},"image":{"@id":"https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/#primaryimage"},"thumbnailUrl":"http:\/\/geektechsol.com\/wp-content\/uploads\/2026\/09\/HPE-867328-B21.jpg","datePublished":"2026-09-08T05:47:17+00:00","dateModified":"2026-09-08T05:47:30+00:00","breadcrumb":{"@id":"https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/#primaryimage","url":"http:\/\/geektechsol.com\/wp-content\/uploads\/2026\/09\/HPE-867328-B21.jpg","contentUrl":"http:\/\/geektechsol.com\/wp-content\/uploads\/2026\/09\/HPE-867328-B21.jpg","width":800,"height":800},{"@type":"BreadcrumbList","@id":"https:\/\/geektechsol.com\/index.php\/product\/867328-b21-hpe-621sfp28-network-adapter-25-gigabit-sfp28-x-2\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/geektechsol.com\/"},{"@type":"ListItem","position":2,"name":"Shop","item":"https:\/\/geektechsol.com\/index.php\/shop\/"},{"@type":"ListItem","position":3,"name":"867328-B21 HPE 621SFP28 Network Adapter 25 Gigabit SFP28 x 2"}]},{"@type":"WebSite","@id":"https:\/\/geektechsol.com\/#website","url":"https:\/\/geektechsol.com\/","name":"Geek Tech Sol","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/geektechsol.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"http:\/\/geektechsol.com\/index.php\/wp-json\/wp\/v2\/product\/42799","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/geektechsol.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"http:\/\/geektechsol.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"http:\/\/geektechsol.com\/index.php\/wp-json\/wp\/v2\/comments?post=42799"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/geektechsol.com\/index.php\/wp-json\/wp\/v2\/media\/42800"}],"wp:attachment":[{"href":"http:\/\/geektechsol.com\/index.php\/wp-json\/wp\/v2\/media?parent=42799"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"http:\/\/geektechsol.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=42799"},{"taxonomy":"product_cat","embeddable":true,"href":"http:\/\/geektechsol.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=42799"},{"taxonomy":"product_tag","embeddable":true,"href":"http:\/\/geektechsol.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=42799"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}