32-to-48 MB DRAM Factory Upgrade for the Cisco 3640 Capacity: 16 MB Compatible Slots: 1 x memory - SIMM 72-PIN Designed For: Cisco 3640, 3640 BRI Dial Bundle, 3640 Gatekeeper, 3640 VPN Bundle, 3640A,

Ref: MEM3640-32U48D

32-to-48 MB DRAM Factory Upgrade for the Cisco 3640 Capacity: 16 MB Compatible Slots: 1 x memory - SIMM 72-PIN Designed For: Cisco 3640, 3640 BRI Dial Bundle, 3640 Gatekeeper, 3640 VPN Bundle, 3640A, 3640A BRI Dial Bundle Form Factor: SIMM 72-PIN Manufacturer: Cisco Meraki Type: DRAM memory module Upgrade Type: System specific Version: original