Elecom WDC-433SU2M USB wireless dongle timeouts waiting for MCU to initialize

[PseudoCylon]

> Message: 1
> Date: Sun, 3 Nov 2013 03:35:44 +0900
> From: Koichiro IWAO <meta at vmeta.jp>
> To: freebsd-questions at freebsd.org
> Subject: Elecom WDC-433SU2M USB wireless dongle timeouts waiting for
>         MCU to initialize
> Message-ID: <20131102183543.GA29930 at icepick.vmeta.jp>
> Content-Type: text/plain; charset=iso-2022-jp
>
>
> Hello,
>
> I'm trying to use Elecom WDC-433SU2M [1] possibly sold only in Japan.
> This dongle has Ralink RT2870 chip. It is mentioned in user's manual [2].
> The manual is  only available in Japanese but you can find
> "Ralink RT2870" in it.

I doubt run(4) supports your device, unfortunately. Even though the
driver is named "Ralink RT2870", Ralink does not have any chipsets
supports 11ac. I think your device uses MadiaTek's chipsets. (It seems
those 2 companies have merged.)