S.C. Code Ann. § 34-1-30: Terms of members; vacancies.

The Governor originally having appointed four members of the Board, one to serve for the term of one year, one for the term of two years, one for the term of three years and one for the term of four years, the successors of the present members, upon the expiration of their respective terms of office, shall be appointed for a term of four years and until their successors are appointed and have qualified. All vacancies shall be filled in the same manner as regular appointments.