ASA5505 memory upgrade

I bought a pair of 512MB memory to upgrade my ASA5505 security plus pair. There are many posts online which people had successfully upgraded their ASA5505 to 1GB. For ASA OS 8.4 to work on ASA5505 a minimum requirement of 512MB is required.

My old ASA5505 pair is usign 256MB and running on ASA OS 8.2 and ASDM 6.21. With ASA OS 8.4 ASA5505 will have to use ASDM 6.43.

There are only three screws to remove, after that removing the case was really easy.

ASA5505 interior from the top view. Notice the compact flash at the bottom right and the DDR Memory at the top.

An alternate view of my ASA5505 interior.

License features difference

ASA 8.2


Maximum Physical Interfaces : 8
VLANs : 20, DMZ Unrestricted
Inside Hosts : 10
Failover : Active/Standby
VPN-DES : Enabled
VPN-3DES-AES : Enabled
SSL VPN Peers : 2
Total VPN Peers : 25
Dual ISPs : Enabled
VLAN Trunk Ports : 8
Shared License : Disabled
AnyConnect for Mobile : Disabled
AnyConnect for Linksys phone : Disabled
AnyConnect Essentials : Disabled
Advanced Endpoint Assessment : Disabled
UC Phone Proxy Sessions : 2
Total UC Proxy Sessions : 2
Botnet Traffic Filter : Disabled

ASA 8.4


Licensed features for this platform:
Maximum Physical Interfaces : 8 perpetual
VLANs : 20 DMZ Unrestricted
Dual ISPs : Enabled perpetual
VLAN Trunk Ports : 8 perpetual
Inside Hosts : 10 perpetual
Failover : Active/Standby perpetual
VPN-DES : Enabled perpetual
VPN-3DES-AES : Enabled perpetual
AnyConnect Premium Peers : 2 perpetual
AnyConnect Essentials : Disabled perpetual
Other VPN Peers : 25 perpetual
Total VPN Peers : 25 perpetual
Shared License : Disabled perpetual
AnyConnect for Mobile : Disabled perpetual
AnyConnect for Cisco VPN Phone : Disabled perpetual
Advanced Endpoint Assessment : Disabled perpetual
UC Phone Proxy Sessions : 2 perpetual
Total UC Proxy Sessions : 2 perpetual
Botnet Traffic Filter : Disabled perpetual
Intercompany Media Engine : Disabled perpetual

show version


ciscoasa# sh version

Cisco Adaptive Security Appliance Software Version 8.4(1)
Device Manager Version 6.4(3)

Compiled on Mon 31-Jan-11 02:11 by builders
System image file is "disk0:/asa841-k8.bin"
Config file at boot was "startup-config"

ciscoasa up 34 secs

Hardware: ASA5505, 512 MB RAM, CPU Geode 500 MHz
Internal ATA Compact Flash, 128MB
BIOS Flash M50FW016 @ 0xfff00000, 2048KB

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5 Responses to ASA5505 memory upgrade

  1. samarth says:

    Great..!!!!!!!!

  2. Starlight says:

    FYI everyone, Kingston/Crucial/Etc RAM is not a sure bet as they often change silicon manufacturers. I picked up a 1G Kingston DIMM that has Elpida chips and it doesn’t work. Likewise with Micron chips (Crucial). The ASA BIOS recognized the Micron chips but the tailored Linux kernel Cisco uses for the ASA5505 8.4(3) image only has Infineon/Qimonda identifiers coded and rejects anything else. An Infineon HYS64D128320HU-5-B ($20) DIMM will definitely work. That’s something like $200 cheaper than the Cisco part.

  3. Doug Stigall says:

    Bought 4 1 GB PC3200 DDR400 mem sticks from a Goodwill Computer store in Houston. One of the four actually worked in my ASA5505 running ASA 9.1 and ASDM 7.1. I see all 1024MB in its wonderful glory.

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