Micro Innovations USB204N

"EP0049-HUB204 REV:B", "ROHS", and "061220" is silkscreened on the board.
 * The Alcor Micro chip is marked with "AU9254A21-HAS-NP", "SL3783", "0648".

There may be multiple revisions of this device.. The shell for the unit used for this entry differs from the one pictured on Amazon.