Dock/ Headphone/microphone combo jackSim Card Slot | Headphone/microphone combo jackKensington security slotUSB Type-C ThunderboltSD card reader | Headphone/microphone combo jackKensington security slotSim Card SlotUSB Type-C ThunderboltSmartCard readerSD card reader | Microphone/Headphone / DockUSB Type-C ThunderboltSecurity lock |