Note,Your power source MUST support 15V PD output via USB C. 45W output or greater is HIGHLY  .

1) Check Your Microsoft Surface For Charging Requirements

2) Check Your Microsoft Surface Charger's Output & Voltage

3) Check Your USB-C PD Power Supply's Output & Voltage

This cable charges at 15V/2.58A, 15V 1.6A, 15V/4A, 15V/6.33A

15V Power Delivery (PD) is REQUIRED for the USB-C power supply.

Suitable: For  Surface Pro3, Pro4, Pro5, Pro6, Book2, Book1, Go. 

Cable Length: 6ft

Package includes

    1 x TYPE C to Surface  Charger Cable