The HTG Card is designed to convert a High-Speed Terasic connector (HSTC) or a High-Speed Mezzanine connector (HSMC) I/Os to three 40-pin expansion prototype connectors, which are compatible with Altera DE2/DE1/DE0 expansion headers. Users can connect up to three Altera DE2/DE1/DE0 boards (or associated daughter cards) onto a HSTC/HSMC-interfaced host board via a HTG Card.