https://asus-rog-g550jk.rogdoc.com/en/appendices/dvd-rom-drive-information-on-selected-models/ctr-21-approval-for-notebook-pc-with-built-in-modem/
CTR 21 Approval (for Notebook PC with built-in Modem) - ASUS ROG G550JK
May 8, 2017 - CTR 21 Approval (for Notebook PC with built-in Modem) Danish Dutch English Finnish French Notebook PC E-Manual 135 German Greek Italian Portuguese Spanish...