Lan port 1 AND 2 are opened for internet by default, the speed will NOT be divided, you get the full speed on both ports.
In certain types of STC FTTH modems you can use all the ports, but changing ports settings from the configuration page.
Source:
I'm an FTTH technical support engineer in STC.
Edit: I just signed up on this website, and I think i posted this on the wrong place,it was intended to be a reply on someone's post
After some calling back and forth over the years, I found that I was misinformed by an STC technician when I asked him about why the 2nd port is disabled and he told be if I was to enable the second port they would split my speed between the 2 ports (So I continued using a switch).
Recently couple of months back, strangely after a power outage the switch died and one of the ethernet cable runs died off (tested it with a friend's cable tester, says it's fine and 6 wires are receiving signal) so I suspected it was the port (Thinking the cable was fine) and I called STC about it, they ended up opening up the 2nd port as he was debugging from the other side (initially he was going on about this being older first model which doesn't support this or that, forgot what he was going on about) now yay I got the 2nd port working. Turns out the ethernet cable was the issue and also another cable connected to that switch previously, stopped being detected by the computer. Strangely this very cable won't be detected by the computer but works with invision (Yes, using the 3rd port which is exclusively reserved for invison only).
Fast forward couple of days of what on earth is going on and ending up rerouting a new cable, after finding out that it works on both the computer which previously wasn't detecting the previously already set cables. Currently using unlimited fibre now and strangely as of recently, during the midnights the internet tends to be throttled down to 2 Mbps, I called them up about it when it happened during afternoon once, it tends to end up being maintenance on their side which recently seems to be more common.
I want to ask about couple of things if you don't mind, why wasn't it announced to the public that Skype packets are pretty much blocked (Compared to Viber and all which had articles being written by news agencies it was strange for skype being not talked about) and 2ndly do the newer router's support wireless AC (801.11ac)?