Linksys BEFW11S4 v4 (r1, Taiwan)

Overview
Device is on this list

There is also an entry under the Q87 grantee code for this device (FCC ID: Q87-BEFW11S4).

There are multiple revisions of this device.
 * The original revision (Made in Taiwan) specifies the voltage as 5V 2A (in the pictures below).
 * The second revision (Made in China) specifies the voltage as 12V 1A.
 * High-res images of this model on the DD-WRT forums

Serial numbers for this revision may start with C2760 (and not followed by a C or D).

"F500-214D0700 REV:" is silkscreened on the board.

Additional FCC IDs of Q87-HGA7T-3 (Linksys HGA7T, high gain antennas) and Q87-HGA5T-3 (Linksys HGA5T, high gain antennas)

Pictures
from M86