Linksys E5300

Overview
"EWW302-A1-BL-015" is silkscreened on the board in the FCC photos.

We are guessing that one of the two spatial streams present
 * in the 5GHz radio is disabled which limits the maximum
 * rate of 5GHz 802.11ac from 867Mbps to 433Mbps.

All of the following devices are internally identical:
 * Linksys E5400 - AC1200 Dual-Band WiFi Router
 * Linksys E5350 - AC1000 Dual-Band WiFi Router
 * Linksys E5300 - AC750 Dual-Band WiFi Router
 * Linksys E2500 v4 - N600 Dual-Band WiFi Router