Thanks langes01x.
Just one point that I didn't get 100%: do I need sgminer v5.0 to use the 4010/4011 ports on TMB?
Ideally I'd be using the TMB autoswitcher as x11mod/x13mod give quite a boost compared to dark/maru... and I'm using PIMP on my mining rig (not too keen on having my PC running 24/7 just to be able to steer & monitor it).
I wouldn't use the 4010/4011 ports if you're not using the v5 mainly because if whatever switching software on the client side is out of sync with the 4010/4011, you'll just be trying to mine on a dead port and it'll go to your secondary. If for instance X13 is more profitable, the 4011 port is on, but you'll see the 4010 port as dead and vice versa.
Just a note though, my miner sees the 4010 and 4011 ports both dead quite a bit, at the same time and I end up mining my secondary for a few minutes.