Allows you charge your Surface devices via 45W 15V3A USB-C Power Delivery (PD) wall charger or power bank, you only need to bring a USBC charger to charge many devices including Surface on the go. It is very lightweight and portable. It can also be used as a spare charger. Requirement: This SISYPHY Surface charging cable requires an USB-C charger or charging bank which support 45W (or more) and 15V3A output. Doublecheck your USBC charger to ensure that it lists "15V/3A" in the specifications. Some PD chargers didn't support the cable. Extreme Durability:Durable Nylon Braided cable protects wire cores to longevity. Aluminum adopted at both end,maked the cable sturdy and durable Charging only: It should be noted that this product can only be used for charging surface devices, data and HDMI cannot be transmitted. Each unit is inspected and tested prior to shipment. We stand behind our products with a 12 month worry-free warranty. Compatibility: Microsoft Surface pro7/6/5/4/3, Surface Laptop1/2/3, Sruface Book1, Surface Go1/2.