https://community.cisco.com/t5/network-security/adding-memory-to-a-dc3500/m-p/3331862#M926031 FMC appliance is basically just a C-Series server with linux installed on top. You should not have any issues with adding more memory but keep in mind that this is not supported, so proceed at your own risk. Thu, 15 Feb 2018 16:46:21 GMT Oliver Kaiser 2018-02-15T16:46:21Z https://community.cisco.com/t5/network-security/adding-memory-to-a-dc3500/m-p/3325953#M926029 <P>We are replacing memory in one of our FS3500 with 48GB, the old 12 GB RAM is removed. It seems a waste not to use that memory. We have an old DC3500 (without servicecontract) with 12GB installed and empty memory slots.</P> <P>&nbsp;</P> <P>Can I add the 12 GB memory to that machine and in which slots should I place them.</P> <P>Does anyone know?</P> <P>&nbsp;</P> <P>regards Henk Fictorie</P> Fri, 21 Feb 2020 15:17:45 GMT https://community.cisco.com/t5/network-security/adding-memory-to-a-dc3500/m-p/3325953#M926029 Henk Fictorie - Ulrich 2020-02-21T15:17:45Z https://community.cisco.com/t5/network-security/adding-memory-to-a-dc3500/m-p/3331862#M926031 FMC appliance is basically just a C-Series server with linux installed on top. You should not have any issues with adding more memory but keep in mind that this is not supported, so proceed at your own risk. Thu, 15 Feb 2018 16:46:21 GMT https://community.cisco.com/t5/network-security/adding-memory-to-a-dc3500/m-p/3331862#M926031 Oliver Kaiser 2018-02-15T16:46:21Z