H2S (HSMC to Santa Cruz Card) is an adapter board for converting High Speed Mezzanine Card (HSMC) connector to Santa Cruz (SC) interface which allows users to use the SC interface boards on a board with a HSMC connector. Also, the source signals form the HSMC connector to the SC header on the H2S board pass through level shifters to adjust the logic level difference between the HSMC and SC interface board.