... another Compact Flash of desired density.Table 9. Cisco 2900 Series Routers Compact Flash (Factory Upgrades and ... SKUDescriptionMEM-CF-256U4GB256MB to 4GB Compact Flash Upgrade for Cisco 1900, 2900, 3900 ISRMEM-CF-256U2GB256MB to 2GB ... provide the New Original Cisco switches, Cisco Router, Cisco Firewall, Cisco SFP (Mini GBIC) Transceiver, Cisco Wireless Access Point, Cisco Wireless Control...etc. ...