XS748T-100NES - unable to disable/switch off Green Ethernet?

schumaku 
Thank you so much for your elaborate response, really appreciated!

For most I agree with your below, however, in this instance we are using enterprise NAS-ses and I noticed the XS748T, whilst WOL was (already) turned-on at the NAS-side, turned-off the ports completely and thus "disabling" the WOL functionality inadvertenly, so it seemed.
Could very well be indeed the aforementioned Fast Ethernet-mode on the NAS side, that is unfortunately not something documented on our side as far as I was able to find out.

The fact you can't influence that from the XS748T side, is thus a deal-breaker for us. Unfortunately.
(and the XS748T also didn't support UTP nor auto-MDI/MDX for our environment monitors did not help either)
Something we never ever encountered before with our (plenty!) other NetGear switches.

So, we are not refering to typical (Windows) OS- (and driver-) challenges in our instance.
(but I'm aware of such, although noticed something similar with our Mac infrastructure too)

But the mere fact you can't influence/set the "Green Ethernet" related settings from the XS748T is I believe a poor choice.
I can understand that NetGear made that concious choice to be more cost-effective but it does, in my humble opinion, also reduce the "downwards compatibilty" of the XS748T in an existing (Netgear) environment as we found out the hard way, so to speak.

The XS748T was readely available from our suppliers (also in quantity) and price-wise was already a bit steep-ish.
The M4300-48X is something we may look into altough our budget is finite, and indeed quite more expensive (almost double the price).

Again, thank you so much, I can understand Netgear's position but some of the choices made regarding the function(s) of the XS748T make it quite challenging and very unfortunate.
But that is what it is, glad we could return our unit and cancel the orders.