I have a GL-AR300M-Ext, I’ve turned off the wifi as I have no need for it and am just using both of the wired ports, I powered it via the USB port on the side of my Roku 3 and has been working well with an OpenVPN connection for hours.
I was considering buying a GL-AR750 as well since the extra LAN port would be helpful on occasion, looking at the power specs though was surprised to see it listed as 5V/2A and <6W power consumption which was much higher than I expected. That prompted me to check the GL-AR300M-Ext which lists 5V/1A and <2W power consumption.
As far as I remember a basic USB2 port gives a max of 0.5A and 2.5W I think, by turning off the wifi it looks to have dropped the GL-AR300M-Ext power draw sufficiently for Roku 3 USB2 port to power it.
My real question is by disabling both wifi settings on GL-AR750 is that likely to get power draw low enough to also run off a standard USB2 port eg Roku 3?
Power draw numbers in listed specs are much higher for GL-AR750 but I imagine the 5ghz wifi etc accounts for majority of that since it has same CPU/RAM etc as my GL-AR300M-Ext. Has anyone tried it and managed OK?
Will try and find my basic power plug meter then measure Roku 3 on own vs roku 3 with GL-AR300M-Ext but I don’t think it’s precise or accurate enough to give me any useful insights sadly.