{"product_id":"isr4321-k9","title":"ISR4321\/K9 ISR 4321 with 2 GE, 2 NIM, 4 GB FLASH, 4 GB DRAM","description":"\u003ch3\u003eCisco ISR4321\/K9 - Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eISR 4321\u003c\/strong\u003e is designed for \u003cstrong\u003esmall to medium branch offices\u003c\/strong\u003e that need secure WAN connectivity, application visibility, and modular expansion. Unlike the bundled SKUs (e.g., -SEC, -AX, -V), the \u003cstrong\u003e\/K9 base model\u003c\/strong\u003e includes only the \u003cstrong\u003eIP Base license\u003c\/strong\u003e, with optional add-on licenses for security, voice, or application services.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e🔧 Key Hardware Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm Factor\u003c\/strong\u003e: 1RU rack-mountable router\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance\u003c\/strong\u003e:\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e50 Mbps default throughput\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eUpgradeable to \u003cstrong\u003e100 Mbps\u003c\/strong\u003e with performance license\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterfaces\u003c\/strong\u003e:\n\u003cul\u003e\n\u003cli\u003e1x RJ45\/SFP combo Gigabit Ethernet WAN\/LAN ports\u003c\/li\u003e\n\u003cli\u003e1x RJ45 Gigabit Ethernet LAN port\u003c\/li\u003e\n\u003cli\u003e2x NIM (Network Interface Module) slots\u003c\/li\u003e\n\u003cli\u003e1x ISC (Internal Services Card) slot\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMemory\/Storage\u003c\/strong\u003e:\n\u003cul\u003e\n\u003cli\u003e4 GB DRAM (upgradeable to 8 GB)\u003c\/li\u003e\n\u003cli\u003e4 GB flash (upgradeable to 8 GB)\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoftware\u003c\/strong\u003e: Cisco IOS XE (modular, Linux-based OS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower\u003c\/strong\u003e: AC PSU (redundant PSU not supported on this model)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e🚀 Key Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSD-WAN Ready\u003c\/strong\u003e - centralized policy, application-aware routing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Security (with add-on license)\u003c\/strong\u003e - Zone-Based Firewall, VPN (IPsec, DMVPN, FlexVPN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication Visibility and Control (AVC)\u003c\/strong\u003e - deep packet inspection and traffic analytics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoice\/UC (with add-on license)\u003c\/strong\u003e - CME, SRST, SIP\/H.323\/MGCP gateway support\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular Expansion\u003c\/strong\u003e - supports NIMs for WAN, voice, or async serial modules\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e🧩 Ideal Use Cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBranch offices\u003c\/strong\u003e needing secure WAN connectivity with modular growth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetail or distributed sites\u003c\/strong\u003e with lean IT staff\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnterprises\u003c\/strong\u003e migrating from ISR G2 routers (e.g., 2900\/3900 series)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHybrid deployments\u003c\/strong\u003e where SD-WAN and security can be added later via licensing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\n","brand":"Cisco","offers":[{"title":"New","offer_id":46926139752640,"sku":"ISR4321\/K9-New","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":46926139785408,"sku":"ISR4321\/K9-Refurbished","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0721\/8167\/8272\/files\/ISR4321-K9_b1fd681f-36a2-4364-81fd-1aa6d95b5120.jpg?v=1767982863","url":"https:\/\/www.p3online.com\/products\/isr4321-k9","provider":"P3 Online","version":"1.0","type":"link"}