OneLink connectorHeadphone/microphone combo jackKensington security slotLenovo Ethernet extension connector | USB Type-Cسیم کارت خورقلم لمسیHeadphone/microphone combo jackButtons for volume up and downKeyboard base with TouchPad | SmartCard readerHeadphone/microphone combo jackKensington security slotUSB Type-C Thunderbolt | SD card readerHeadphone/microphone combo jackKensington security slotUSB Type-C Thunderbolt |