Stock code - APBrand New and high quality adapter cable which can convert round 2.1mm x 5.5mm DC connector from suitable DC power supply to new square connector for IBM LenovoThere is a special IC inside for IBM Lenovo ThinkpadThis is a special convertor/adapter plug for use with IBM Lenovo Thinkpad Edge Laptop Notebook such as Carbon Yoga 13 or future laptops which use the new square power portYou need to make sure the voltage and current output on your existing power supply are compatible with your new laptop/notebook before using with this adapter - failure to do so could result in permanent damage to your equipmentEnd 1 = Female 2.1mm x 5.5mm DC Socket - to accept 2.1mm Male Jack from power supplyEnd 2 = Male Yellow Tip Square style Power Tip with Centre Pin - to fit into your new laptop/notebookTHIS LISTING DOES NOT INCLUDE ANY POWER SUPPLY - THIS IS FOR ADAPTER PLUG ONLY - WILL NOT CHANGE VOLTAGE/CURRENT, ONLY TIP SIZE MPN P2GADPL21.55.LEN.NEWY Brand P2G Unit Type Unit