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 cable requires an USB-C charger or charging bank that support 45W 15V3A output. Doublecheck your USBC charger to ensure that it lists "15V/3A" in the specifications. Some PD chargers didn't support the cable, most phone charger wouldn't support the cable. It's recommended that use the cable together with our GaN 3-Port USBC charger, avoid incompatibility problems. 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.