The ace card can be both high and low in Texas Hold’em. If you have two or more aces as your final hand, the aces are considered high, and are, therefore, the highest pair you can get in Texas Hold’em. However, when used as part of a straight, aces can be either high or low, meaning you can have an ace through 5 straight, which is the lowest possible straight, or a 10 through ace straight, which is the highest possible.