Headphone/microphone combo jackKensington security slotUSB Type-C ThunderboltSD card reader | Headphone/microphone combo jackKensington security slotUSB Type-C ThunderboltSD card reader | Headphone/microphone combo jackKensington security slotUSB Type-C ThunderboltSmartCard reader | Microphone/Headphone / DockUSB Type-C ThunderboltSecurity lock |