Open ports on EX6120

Hello,

I have a EX6120 WiFi Range Extender, firmware version V1.0.0.54_1.0.34. I was checking at it's open ports and notice that it has port 7777 and 8888 open (appart from 53, 80 and 5000). I couldn't not find any technical documentation about it, does anyone know what are this port open for?

Cheers,

Damian