Cisco MEM2821-512U768D 512 to 768MB DDR DRAM Factory Upgrade for 2821

Overview

The Cisco MEM2821-512U768D is a factory approved memory upgrade that expands the standard 512 MB DDR DRAM configuration of the Cisco 2821 router to a full 768 MB. Designed to meet Cisco's rigorous performance and reliability standards, this upgrade provides additional memory headroom for demanding routing protocols, security services, and data-intensive applications. Installation is performed at the factory, ensuring optimal placement and compatibility with the router's existing hardware.

Key Features

• Increases total DDR DRAM from 512 MB to 768 MB for enhanced processing capacity
• Factory installed to guarantee correct configuration and minimal downtime
• Fully compatible with Cisco 2821 routers running IOS releases that support 768 MB memory
• Improves performance of VPN, firewall, and QoS features without hardware modification
• Maintains original Cisco warranty and support agreements

Technical Specifications

• Memory type: DDR SDRAM
• Capacity: 256 MB additional (total 768 MB)
• Speed: 100 MHz
• Voltage: 2.5 V
• Form factor: DIMM, 168 pins
• Operating temperature: 0 to 55 degrees Celsius
• Power consumption: less than 2 Watts

Applications

• Enterprise branch office routers that require higher throughput for MPLS and VPN tunnels
• Service provider edge devices handling increased session counts and traffic shaping
• Secure gateways that run multiple security policies and deep packet inspection
• Network environments that deploy advanced routing protocols such as OSPF, EIGRP, and BGP with large routing tables
• Any Cisco 2821 deployment where future growth and scalability are a priority