but look at the mb site they not type 2.0http://www.asus.com/Motherboards/Intel_Socket_775/P5KPL_SE/#specifications
Expansion Slots 1 x PCIe x16
look at this mb P5G43TM_PROhttp://www.asus.com/Motherboards/Intel_Socket_775/P5G43TM_PRO/#specificatio
Expansion Slots 1 x PCIe 2.0 x16
you can see they type after PCI e (2.0)!!
so how can be the first one 2.0 ?!? i really so confused