Hi David,
The NME-WAE-522 is no longer supported from WAAS version 5.x and later :
From 5.0.1 release notes :
WAE-512 and WAE-612 appliances and NME-WAE-302 and NME-WAE-522 modules—These appliances and modules are no longer supported and WAAS version 5.0 and later does not operate on these appliances and modules. Upgrading to WAAS version 5.0 on these devices (or on a device group that contains any of these devices) is not allowed.
So this is probably why the manager won't show it.
Best regards
Finn Poulsen