{"id":6883,"date":"2026-09-08T00:43:59","date_gmt":"2026-09-08T00:43:59","guid":{"rendered":"https:\/\/geektechsol.com\/index.php\/product\/isr4321-v-k9-cisco-4321-router\/"},"modified":"2026-09-08T00:44:10","modified_gmt":"2026-09-08T00:44:10","slug":"isr4321-v-k9-cisco-4321-router","status":"publish","type":"product","link":"http:\/\/geektechsol.com\/index.php\/product\/isr4321-v-k9-cisco-4321-router\/","title":{"rendered":"ISR4321-V\/K9, Cisco 4321 Router"},"content":{"rendered":"<p>ISR4321-V\/K9 Technical Specifications<\/p>\n<p>Cisco 4321 Router 2 Ports Management Port 4 Slots Gigabit Ethernet 1U Rack-mountable, Wall Mountable, Desktop<\/p>\n<p>General Information<\/p>\n<p>Manufacturer Cisco Systems, Inc<\/p>\n<p>Manufacturer Part Number ISR4321-V\/K9<\/p>\n<p>Brand Name Cisco<\/p>\n<p>Product Line Cisco ISR<\/p>\n<p>Product Series ISR 4000<\/p>\n<p>Product Model ISR4321<\/p>\n<p>Ethernet Technology: Gigabit Ethernet<\/p>\n<p>Product Name 4321 Router<\/p>\n<p>Product Type Router<\/p>\n<p>Interfaces\/Ports<\/p>\n<p>Total Number of Ports 2<\/p>\n<p>USB Yes<\/p>\n<p>Power line No<\/p>\n<p>Management Port Yes<\/p>\n<p>Token Ring Port No<\/p>\n<p>Number of Network (RJ-45) Ports 2<\/p>\n<p>I\/O Expansions<\/p>\n<p>Number of Total Expansion Slots 4<\/p>\n<p>Expansion Slot Type SFP<\/p>\n<p>Network &#038; Communication<\/p>\n<p>Network Technology 10\/100\/1000Base-T<\/p>\n<p>Ethernet Technology Gigabit Ethernet<\/p>\n<p>VoIP Supported Yes<\/p>\n<p>Memory<\/p>\n<p>Standard Memory 4 GB<\/p>\n<p>Maximum Memory 8 GB<\/p>\n<p>Memory Technology DRAM<\/p>\n<p>Flash Memory 4 GB<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ISR4321-V\/K9 Overview<\/p>\n<p>Cisco Intergrated Services router ISR4321-V\/K9 Voice Bundle is design to deliver advanced VOIP services to the small enterprise branch environment. Cisco ISR 4321 integrates 2 dual mode Gigabit Ethernet ports and PVDM4 DSP for voice and video services, two network modules, one integrated services card slot, 4GB DDR3 Dream and 4 GB flash memory.<\/p>\n","protected":false},"featured_media":6884,"comment_status":"closed","ping_status":"open","template":"","meta":{"_acf_changed":false},"product_brand":[255],"product_cat":[720,719],"product_tag":[400,1036,1037,692,628,1052,727,1053],"class_list":["post-6883","product","type-product","status-publish","has-post-thumbnail","product_brand-cisco","product_cat-cisco-routers","product_cat-routers","product_tag-4-x-sfp-expansion-slots","product_tag-cisco-isr","product_tag-cisco-isr-4000-series","product_tag-gigabit-ethernet-router","product_tag-router","product_tag-sfp-router","product_tag-sfp-slots","product_tag-voip-router","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>ISR4321-V\/K9, Cisco 4321 Router - 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\/isr4321-v-k9-cisco-4321-router\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ISR4321-V\/K9, Cisco 4321 Router - Geek Tech Sol\" \/>\n<meta property=\"og:description\" content=\"ISR4321-V\/K9 Overview Cisco Intergrated Services router ISR4321-V\/K9 Voice Bundle is design to deliver advanced VOIP services to the small enterprise branch environment. Cisco ISR 4321 integrates 2 dual mode Gigabit Ethernet ports and PVDM4 DSP for voice and video services, two network modules, one integrated services card slot, 4GB DDR3 Dream and 4 GB flash memory.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/geektechsol.com\/index.php\/product\/isr4321-v-k9-cisco-4321-router\/\" \/>\n<meta property=\"og:site_name\" content=\"Geek Tech Sol\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-08T00:44:10+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/geektechsol.com\/wp-content\/uploads\/2026\/09\/Cisco-ISR4321-V-K9-1.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\\\/isr4321-v-k9-cisco-4321-router\\\/\",\"url\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/isr4321-v-k9-cisco-4321-router\\\/\",\"name\":\"ISR4321-V\\\/K9, Cisco 4321 Router - Geek Tech Sol\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/geektechsol.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/isr4321-v-k9-cisco-4321-router\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/isr4321-v-k9-cisco-4321-router\\\/#primaryimage\"},\"thumbnailUrl\":\"http:\\\/\\\/geektechsol.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/Cisco-ISR4321-V-K9-1.jpg\",\"datePublished\":\"2026-09-08T00:43:59+00:00\",\"dateModified\":\"2026-09-08T00:44:10+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/isr4321-v-k9-cisco-4321-router\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/isr4321-v-k9-cisco-4321-router\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/isr4321-v-k9-cisco-4321-router\\\/#primaryimage\",\"url\":\"http:\\\/\\\/geektechsol.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/Cisco-ISR4321-V-K9-1.jpg\",\"contentUrl\":\"http:\\\/\\\/geektechsol.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/Cisco-ISR4321-V-K9-1.jpg\",\"width\":800,\"height\":800},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/isr4321-v-k9-cisco-4321-router\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"http:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/ssdpf2ke064t11z-solidigm-6-4tb-pci-e-nvme-solid-state-drive-ssd\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"https:\\\/\\\/geektechsol.com\\\/index.php\\\/shop\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"ISR4321-V\\\/K9, Cisco 4321 Router\"}]},{\"@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":"ISR4321-V\/K9, Cisco 4321 Router - 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\/isr4321-v-k9-cisco-4321-router\/","og_locale":"en_US","og_type":"article","og_title":"ISR4321-V\/K9, Cisco 4321 Router - Geek Tech Sol","og_description":"ISR4321-V\/K9 Overview Cisco Intergrated Services router ISR4321-V\/K9 Voice Bundle is design to deliver advanced VOIP services to the small enterprise branch environment. 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