Compare the plug shapes, voltage and frequency in Mexico and Malaysia, and find out which adapter you need before you travel.
Adapter required
Yes — coming from Mexico, you will need a travel adapter for Malaysia. Mexico uses Type A/Type B plugs, and Malaysia uses Type G, so the pin shapes will not fit any wall socket. Voltages differ (127 V at home vs 230 V abroad), so check the label on each device. Most modern dual-voltage chargers handle the swing without a converter, but heating appliances usually do not. The mains frequency is also different (60 Hz vs 50 Hz). This rarely matters for electronics but can affect motor-driven devices like clocks and shavers.
Mexico (home)
Malaysia (destination)
Electrical specifications in Malaysia
More about plugs in Malaysia
In Malaysia, the standard power plug is Type G. The country runs on 230 volts at 50 Hz. That means every wall socket in Malaysia is the same shape — Type G, and your plug needs to physically match the socket to fit.
Full Malaysia plug guide