Serial Port / Headphone/microphone combo jack | Card Reader: SD, 1 SmartCard | SD card readerHeadphone/microphone combo jackKensington security slotUSB Type-C Thunderbolt | Dock/ Headphone/microphone combo jackSim Card SlotUSB Type-C Thunderbolt | USB Type-Cقلم لمسیشارژر اورجینال تایپ سیHeadphone/microphone combo jackButtons for volume up and downKeyboard base with TouchPad |