{"id":86297,"date":"2026-09-08T17:01:42","date_gmt":"2026-09-08T17:01:42","guid":{"rendered":"https:\/\/geektechsol.com\/index.php\/product\/refurbished-isr4321-v-k9-cisco-4321-router\/"},"modified":"2026-09-08T17:02:10","modified_gmt":"2026-09-08T17:02:10","slug":"refurbished-isr4321-v-k9-cisco-4321-router","status":"publish","type":"product","link":"http:\/\/geektechsol.com\/index.php\/product\/refurbished-isr4321-v-k9-cisco-4321-router\/","title":{"rendered":"Refurbished ISR4321-V\/K9, Cisco 4321 Router"},"content":{"rendered":"<p>Refurbished ISR4321-V\/K9 Technical Specifications<\/p>\n<p>Cisco 4321 Router \u2013 2 Ports \u2013 Management Port \u2013 4 Slots \u2013 Gigabit Ethernet \u2013 1U \u2013 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>Expansion Slot Type Integrated Services Card (ISC)<\/p>\n<p>Expansion Slot Type Network Interface Module (NIM)<\/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<p>Power Description<\/p>\n<p>PoE (RJ-45) Port No<\/p>\n<p>Input Voltage 230 V AC<\/p>\n<p>Input Voltage 120 V AC<\/p>\n<p>Power Source PoE<\/p>\n<p>Power Source Power Supply<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Refurbished 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.Cisco ISR4321 delivers 50Mbps thoughtput by default, with pay-as-you-grow performance, you can increase forwarding capacity to 100Mbps when needed, so the platform performance growth with your business, you only pay for the performance you need. According to security, ISR4321 support most advanced encryption \u2013 IPsec, SSL VPN and flex VP<\/p>\n","protected":false},"featured_media":86298,"comment_status":"closed","ping_status":"open","template":"","meta":{"_acf_changed":false},"product_brand":[255],"product_cat":[691,347,626],"product_tag":[400,1036,1037,677,628,1053],"class_list":["post-86297","product","type-product","status-publish","has-post-thumbnail","product_brand-cisco","product_cat-cisco-refurbished-routers","product_cat-refurbished","product_cat-refurbished-routers","product_tag-4-x-sfp-expansion-slots","product_tag-cisco-isr","product_tag-cisco-isr-4000-series","product_tag-gigabit-ethernet-servers","product_tag-router","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>Refurbished 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=\"http:\/\/geektechsol.com\/index.php\/product\/refurbished-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=\"Refurbished ISR4321-V\/K9, Cisco 4321 Router - Geek Tech Sol\" \/>\n<meta property=\"og:description\" content=\"Refurbished 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.Cisco ISR4321 delivers 50Mbps thoughtput by default, with pay-as-you-grow performance, you can increase forwarding capacity to 100Mbps when needed, so the platform performance growth with your business, you only pay for the performance you need. According to security, ISR4321 support most advanced encryption \u2013 IPsec, SSL VPN and flex VP\" \/>\n<meta property=\"og:url\" content=\"http:\/\/geektechsol.com\/index.php\/product\/refurbished-isr4321-v-k9-cisco-4321-router\/\" \/>\n<meta property=\"og:site_name\" content=\"Geek Tech Sol\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-08T17:02:10+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/geektechsol.com\/wp-content\/uploads\/2026\/09\/Refurbished-Cisco-ISR4321-V-K9.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\":\"http:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/refurbished-isr4321-v-k9-cisco-4321-router\\\/\",\"url\":\"http:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/refurbished-isr4321-v-k9-cisco-4321-router\\\/\",\"name\":\"Refurbished ISR4321-V\\\/K9, Cisco 4321 Router - Geek Tech Sol\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/geektechsol.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"http:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/refurbished-isr4321-v-k9-cisco-4321-router\\\/#primaryimage\"},\"image\":{\"@id\":\"http:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/refurbished-isr4321-v-k9-cisco-4321-router\\\/#primaryimage\"},\"thumbnailUrl\":\"http:\\\/\\\/geektechsol.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/Refurbished-Cisco-ISR4321-V-K9.jpg\",\"datePublished\":\"2026-09-08T17:01:42+00:00\",\"dateModified\":\"2026-09-08T17:02:10+00:00\",\"breadcrumb\":{\"@id\":\"http:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/refurbished-isr4321-v-k9-cisco-4321-router\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"http:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/refurbished-isr4321-v-k9-cisco-4321-router\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"http:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/refurbished-isr4321-v-k9-cisco-4321-router\\\/#primaryimage\",\"url\":\"http:\\\/\\\/geektechsol.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/Refurbished-Cisco-ISR4321-V-K9.jpg\",\"contentUrl\":\"http:\\\/\\\/geektechsol.com\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/Refurbished-Cisco-ISR4321-V-K9.jpg\",\"width\":800,\"height\":800},{\"@type\":\"BreadcrumbList\",\"@id\":\"http:\\\/\\\/geektechsol.com\\\/index.php\\\/product\\\/refurbished-isr4321-v-k9-cisco-4321-router\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"http:\\\/\\\/geektechsol.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"http:\\\/\\\/geektechsol.com\\\/index.php\\\/shop\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Refurbished 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":"Refurbished 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":"http:\/\/geektechsol.com\/index.php\/product\/refurbished-isr4321-v-k9-cisco-4321-router\/","og_locale":"en_US","og_type":"article","og_title":"Refurbished ISR4321-V\/K9, Cisco 4321 Router - Geek Tech Sol","og_description":"Refurbished 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.Cisco ISR4321 delivers 50Mbps thoughtput by default, with pay-as-you-grow performance, you can increase forwarding capacity to 100Mbps when needed, so the platform performance growth with your business, you only pay for the performance you need. 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