Customer needed a new appliance for their ACS deployment.
www.cisco.com/c/en/us/td/docs/net_mgmt/cisco_secure_access_control_system/5-8/release/notes/acs_58_rn.html#pgfId-455387
says that SNS-3595-K9 is supported with ACS 5.8.1:
-- snip --
Table 1 Su...