S.C. Code Ann. § 36-9-201: General effectiveness of security agreement.

(a) Except as otherwise provided in the Uniform Commercial Code, a security agreement is effective according to its terms between the parties, against purchasers of the collateral, and against creditors.

(b) A transaction subject to this article is subject to any applicable rule of law which establishes a different rule for consumers and (i) Title 37 and (ii) any consumer-protection statute or regulation.

(c) In case of conflict between this article and a rule of law, statute, or regulation described in subsection (b), the rule of law, statute, or regulation controls. Failure to comply with a statute or regulation described in subsection (b) has only the effect the statute or regulation specifies.

(d) This chapter does not:

(1) validate any rate, charge, agreement, or practice that violates a rule of law, statute, or regulation described in subsection (b); or

(2) extend the application of the rule of law, statute, or regulation to a transaction not otherwise subject to it.