qgis - Why is SAGA from the Processing Plugin not recognised?

Similar to SAGA algorithms don't work in QGIS 2.8 except that SAGA does not appear at all in the Processing Toolbox:

As a check, I used the Python Console with the following code to see if any SAGA tools are available (which they're not):

import processing
processing.alglist()

I've installed QGIS 2.8.2 Wien via the OSGeo4W Network Installer, 64-bit and downloaded the latest version of the Processing Plugin (v2.9.3).

Answer

Just to add to the earlier answer...

You can find the field for the path here -

Processing > Options > Providers > SAGA > SAGA Folder:

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