Cisco MEM3620-16D= enterprise networking (router/Catalyst switch/UCS families) Telecom System Card / Module

The Cisco MEM3620-16D= is a 16MB DRAM SIMM upgrade for the Cisco 3620 modular access router. The 3620 is a two-slot member of Cisco’s 3600 Series modular router family, and its DRAM capacity directly limits how much routing table, buffer and feature-set headroom is available to IOS, so a memory upgrade is often needed simply to run a current-enough IOS image or to add features such as VPN, voice or larger routing tables. This SIMM installs in the router’s DRAM bank alongside (or in place of) the factory-fitted module, and is one of the standard capacity points Cisco shipped for the 3620/3640/3660 memory architecture of that era. Genuine 3600-series memory of this type is routinely needed to keep older 3620 deployments serviceable, particularly where the router is being kept in production for cost or compatibility reasons rather than being replaced outright. Confirm your 3620’s current DRAM configuration and target IOS feature set before ordering; this is a refurbished unit, shipped worldwide from Tech-Star’s UK stock.