EDUP EP-N8508


 * (The existence of invisible)

There would appear to be multiple (obvious / discernible) revisions /
 * manufacturers / clones of this adapter.

The original may have no LEDs, a solid black plastic casing, and likely
 * solely uses 00:E0:4C (Realtek) OUIs.

Another type would appear to have an always-on blue LED which shines
 * through the semi-translucent red band on dongle (looks kind of cool).

At least some of these use E8:4E:06 (EDUP) OUIs.