In Graskop, South Africa, the sockets are type D, M and N. The standard voltage is 230 V and the frequency is 50 Hz. Type D and M sockets are mainly used, which have three large round pins in a triangular pattern. Type N sockets with two round pins and one grounding pin can also be found, but are less common. Travelers are advised to carry a universal adapter compatible with these outlet types to ensure smooth use of their electronic devices.