Acho is a bit stiff, and he doesn't excel at shedding blocks, but he's known to be a heady player who can hold his own against the run.
Joey Porter isn't likely to return to the Cardinals in 2011, and Arizona will hope to have a smooth transition at the position with Acho. He doesn't project as a great pass rusher, but was able to hold his own against double teams in college when he lined up as a 5-technique. Acho may bring a bit of positional flexibility, but he also may turn out to be a bit of a project in the NFL.
Bonus: Acho's middle name "Onyedikachi" means "who is like unto God."