HQmade 7.9/5.5mm Round Jack to Square End Adapter Lenovo Ideapad/Essential to Lenovo Ideapad Yoga Lenovo ThinkPad Helix, Ultrabook Laptop Battery Charger Dongle for Ac Power Cord Barrel Adaptor Cable Type: Power Type: Others Color: Black Connector Number: 2 Connector Detail: Lenovo Tip Adapter