Only problem i had with the X540-T2 is significantly increase boot time. Got some Asus 10gbit cards to replace were about the same price on the bay(and also support 2.5/5 etc). And switch wise I found on the bay dell switches with 10gbit addon cards were by far the cheapest if not the biggest pita (and again only support 10gb or 1gb nothing inbetween)
Model name and cost?