USB to Round Barrel Jack

USB Type C PD Charging Cable Cord 19.5V 4.5*3.0mm Blue Tip Male Plug Converter DC Power Adapter Charger for HP 65W or below Laptops

Barrel Jack Adapter - USB to 5.5mm Female - TOL-09124 - SparkFun Electronics

Power Adapter Cable 5.5MM X 2.5MM Female Interface Round Jack To USB Square Converter DC Plug For Lenovo ThinkPad X1 Carbon - AliExpress

Stable 2pin gold-plated round magnetic charging cable M523GB

for Lenovo ThinkPad Round Jack to Square Plug Adapter Power Charger M3w2 N5k7

Micro USB Plug to 5.5/2.1mm DC Barrel Jack Adapter - OSA Electronics

5.5mm Round Pin Connector 5v USB DC Charger Power Cable Lipo Battery Barrel Jack

No LED Weatherproof Universal USB Charger Adapter Socket 12V Outlet Po – 12vtechnology LLC

USB to DC Power Jack

USB Port Power Cable with 3 Extra Connector Tips -CAB-Z4KI

USB to 5V DC barrel jack power cable – Konnected

Leave your USB-C power adapter at home and charge your USB-C powered laptop with the commonly available barrel power adapter. Simply connect your laptop with the Dell Adapter 7.4 mm Barrel to USB-C to any Dell-branded 7.4 mm barrel power adapter and start charging right away. Small and light, this adapter takes up minimal desk space and can be easily carried around in your bag.

Dell 470-ACFH Adapter 7.4mm Barrel to USB-C

How to Select DC Power Connectors: The Basics - Industry Articles