31 CFR 510.520: Transactions ordinarily incident to the exportation or reexportation to North Korea of items licensed or otherwise authorized by the Department of Commerce, and related services.

All transactions ordinarily incident to the exportation or reexportation of items (commodities, software, or technology) to North Korea, including transactions with the Government of North Korea or any other person whose property and interests in property are blocked pursuant to § 510.201, and services provided outside North Korea to install, repair, or replace such items, are authorized, provided that the exportation or reexportation of such items to North Korea is licensed or otherwise authorized by the Department of Commerce.