ASA 5520 and ASA 5540 with only one DIMM Memory Socket – Counterfeit Hardware

There is a significant numbers of ASA5510 chassis that have been reworked to look and act like ASA5520 or ASA5540 firewalls in the open marketplace and look exactly like the genuine article. Refer this bug toolkit for more details – text here:

Since the release of Cisco ASA software version 8.3(1) and the related recommendation to upgrade the RAM in all Cisco ASA-5520s and/or ASA-5540s, some Cisco ASA customers have contacted the TAC reporting devices with only one DIMM socket. tweet

Working with these customers, Cisco conducted a detailed investigation and identified the affected devices as Cisco ASA-5510s that were modified post-manufacture to look like Cisco ASA-5520s or Cisco ASA-5540s. Cisco has always manufactured these products with either 4 or 2 DIMM sockets, so these modifications were completed without our consent and outside of our control. Cisco takes this situation very seriously and through our Brand Protection team is sharing these findings with the appropriate authorities. tweet

Cisco’s commitment will always be to quality products and supporting our customers. That is why we also offer service and support contracts for products purchased from authorized Cisco partners. tweet

If your device was purchased from an authorized Cisco partner, it will be supported. In other cases we encourage you to contact the original point of purchase to determine next steps” tweet

Cisco Bug Tool Kit: Limited Numbers of ASA5520s and 5540s with 1 DIMM Socket: ”

A Cisco authorised partner will be required to replace the unit. If you have purchased it from an unauthorised channel then you will need to buy a new unit.

Article on Cisco Support Forums ASA5520 Memory Upgrade where it seems the problem started in April 2010 and has continually gotten worse since then. Includes pictures and other interesting details.

About Greg Ferro

Greg Ferro is a Network Engineer/Architect, mostly focussed on Data Centre, Security Infrastructure, and recently Virtualization. He has over 20 years in IT, in wide range of employers working as a freelance consultant including Finance, Service Providers and Online Companies. He is CCIE#6920 and has a few ideas about the world, but not enough to really count.

He is a host on the Packet Pushers Podcast, blogger at and on Twitter @etherealmind and Google Plus

You can contact Greg via the site contact page.

  • Anonymous

    This just solidifies the agreement, always purchase from an authorized source. Good find.

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