Linksys USBHUB04

Overview

 * 6V, 2.1A external power
 * Dated 1999

"ATEN" and "0PB2-0439-A" is silkscreened on the top (and bottom) of the board.
 * A label with "UH144ML-3L1" and "A2LI105000280AA" printed on it is affixed to the bottom of the board.
 * This device would appear to be an Aten UH-144ML.

The first usage of a filename with "USBHUB04" via an archive.org search of the linksys.com domain appears 2000-01-10.
 * Likely 1999/2000 launch, but I'll go with 2000 for now..

Links of Interest
Datasheet • User Guide