DC 5.5x2.5mm Female to Square Plug End Adapter Pigtail Charger Power Adapter Converter Cable For Lenovo ThinkPad 10 Helix 2 - AliExpress
US Plug AC Adapter 19V 3.42A 65W For Lenovo Notebook Output Tips: 5.5x
Amazon.com: JMT DC 7.9 x 5.5mm Round Jack to Square USB Plug Converter Laptop Power Adapter Connector Cable Compatible for Lenovo ThinkPad IBM Charger (15cm,5.5x2.5mm Male-USB Female) : Electronics
Amazon.com: 1pcs 5.5X2.5mm DC Power Male Tip Plug Connector with Cord/Cable for Toshiba Asus Lenovo Laptop Adapter 5.5 * 2.5mm : Electronics
Dongle Adapter 5.5x2.5mm to Lenovo New Square USB Tip (Orange Color) Connector Converter for Lenovo Yoga 900/ Yoga 700 11 14, Yoga 3/ Pro - Newegg.com