It has been a month, to the day, since I picked on Windows RT for being more locked down than a Nintendo console. Devices, including Microsoft's own Surface RT, did not allow USB to Ethernet dongles for wired internet access. Compared to the Wii, that is quite pathetic.
Certain users have been able to use adapters until apparently, according to Mary Jo Foley, Microsoft helped ensure they are broke as intended. They are also demanding hardware manufacturers, who otherwise could support the operating system, to withhold drivers from their customers.
If you were one of those people who managed to get an Ethernet dongle working with your ARM-based Surface RT, you've probably since discovered that it no longer works.
I did not see any confirmation of Microsoft disabling any drivers so, bare in mind, I might have just misunderstood the above quote. Apparently, though, the issue arises from Connected Standby conflicts with those dongles.
But that does not mean Microsoft will continue to prevent Ethernet dongles.
According to the same article from Mary Jo Foley, Microsoft is quietly working on a fix for the issue. They are currently working, along with hardware manufacturers, on creating devices which can support the instant-on, instant-off feature. The cynic in me, of course, wonders if Microsoft will be first to market with the, albeit rumored, corrected peripheral.
Personally, I feel that a consumer who purchases one of your devices should be allowed to install hardware understanding the tradeoff. It would not be too difficult to pop up a warning, "Your USB device is not compatible with Connected Standby; the feature will resume when your accessory is removed".
Just another advantage for truly personal PCs.