S.C. Code § 1-3-210
During the recess of the Senate, vacancy which occurs in an office filled by an appointment of the Governor with the advice and consent of the Senate may be filled by an interim appointment of the Governor. The Governor must report the interim appointment to the Senate and must forward a formal appointment at its next ensuing regular session.
If the Senate does not advise and consent thereto prior to sine die adjournment of the next ensuing regular session, the office shall be vacant and the interim appointment shall not serve in hold over status notwithstanding any other provision of law to the contrary. A subsequent interim appointment of a different person to a vacancy created by a failure of the Senate to grant confirmation to the original interim appointment shall expire on the second Tuesday in January following the date of such subsequent interim appointment and the office shall be vacant.
S.C. Code § 1-3-210