You could buy one of Dre's, slightly unmodify yours, or buy one from a local computer surplus store.
The T-Chip will not fix your problem. It is an upgrade to the T-Board, whih does have the answer to your problem. However, it is not necesary to go out and buy a complete T-Board for close to $50 when a $1-5 switch or mebbe even a free modification coud fix the problem.
