Microphone/Headphone / DockUSB Type-C ThunderboltSecurity lock | Headphone/microphone combo jackUSB Type-C (USB Power Delivery, DisplayPort) | Headphone/microphone combo jackKensington security slotUSB Type-C ThunderboltSD card reader | Headphone/microphone combo jackKensington security slotUSB Type-C ThunderboltSD card reader |