Turtle Beach TBS400-3355-01

This device is probably a Montego card..

"TBS400-3355-01" is silkscreened on the front of the card (under the SPDIF_12S header pins).
 * This model is also on a label affixed to the back of the card. Another label on the back indicates the device has a DP/N of 00007005, is a Rev A00, and is made in Indonesia.