You have made a common mistake when looking at the brackets. Higher seeds always host against lower seeds. The "H" you see is the "Tie-Breaker" if 2 teams with the same seed number are playing. Lexington will hosts Round 2 if they win Round 1. If both Beaufort and Lexington meet in Round 3, they will play at Beaufort.
Before the Conspiracy Theories get started....these brackets are drawn up at the beggining of the school year....before teams are known. They change slightly each year to even out the Host Sites over a 4 year period....