Belkin F9K1103 v1

Overview
"P/N: 141911720003J R01C" is silkscreened on the board.

The default SSID patterns for this model is:
 * belkin.XXX (where XXX is the last three octets of the wireless interface MAC for this SSID) and
 * belkin.XXX.5GHz (MAC = 2.4GHz network MAC + 2, same XXX from the 2.4GHz network).

The guest network is (if enabled) belkin.XXX.guests
 * (MAC = 2.4GHz network MAC + 1, same XXX from the 2.4GHz network).

Reviews

 * Reviewed on SmallNetBuilder
 * OUI of 08:86:3B and SSID of belkin_2

Forum threads

 * Support Request - Belkin N 750 DB - F9K1103 v1 (01A) on DD-WRT forums
 * Belkin F9K1103 (N750 DB) equivalent and support for openwrt on OpenWRT forums

third party firmware

 * https://forum.openwrt.org/t/belkin-n750db-f9k1103-v1-firmware/49013
 * https://yadi.sk/d/6ttXcerpJ2hg3
 * https://app.box.com/s/2wxyv4cjdgd52m4a1wzd

Serial Pinouts
^ to RAM © (GND) © (RxD) © (TxD)   --> 5 GHz ant (B) ® [3.3]   NC J12

Pictures
Belkin Images 

GPIO

 * Source
 * I've gathered some of GPIO functions:

Tested by telnet:

Gathered from OpenWrt:
 * wired/wireless leds are controlled via bit shift register sitting on gpio pins 14 (ctl) and 4 (clk)
 * speed leds are controlled via bit shift register sitting on pins 17 (ctl) and 18 (clk)

Some notes:
 * restore config function doesn't work properly, the router get stucked.
 * PPPoE doesn't work with preselected want port, bridge port must be selected for wan, br0
 * current firmware level is more to instable to use it for a long period of time,
 * if there will be any new releases and if the time permits I'll test them.