vt665x ====== vt6655 is a VIA driver for PCI devices, and vt6656 is for USB. vt6656 is a mac80211 driver, since 3.17+. vt6655 is a mac80211 driver, since 3.19+. These are in the **staging** tree at linux-2.6/drivers/staging and it is **NOT supported** by linux-wireless developers or mailing list. Instead ask for support in http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel or to the maintainers Greg Kroah-Hartman and Forest Bond .