Cisco MEM3640-2X32D= enterprise networking (router/Catalyst switch/UCS families) Telecom System Card / Module

The Cisco MEM3640-2X32D= is a 64MB DRAM memory kit for the Cisco 3640 router, supplied as two 32MB DIMMs for the router’s paired memory slots. It provides additional main system memory for the router’s IOS image, routing tables and buffer allocation, and is a common upgrade for 3640-series routers running larger IOS feature sets, VPN termination or additional network modules than the router’s base memory configuration supports. This is a well-documented, widely stocked upgrade path for the 3600 series, and genuine spares are routinely needed both to restore a router to full specification and to extend the service life of hardware already deployed. Specifiers should confirm the exact router model and existing memory configuration before ordering, since 3600-series memory kits must be fitted in matched pairs and are not universally interchangeable across the family. Tech-Star (UK-based, shipped worldwide) stocks Cisco memory upgrades to support ongoing network maintenance projects.