Hi,
There' s no problem use DE115P and G400P in your motherboard, and we test A810P and A1610P in lots of motherbord with P55/H55 chipset, them worked good!
Hi,
The only different between A810P and AE810P is: there's no hardware echocanceller on A810P.
"Unknown device" will not affect the G400P working!
All the cards can be used on Trixbox 2.8 or 2.6 after recompiling the drivers for them, there're installation guid on our website, also we can help you install them!