First Step: Connect the Cable to USB-C adapter, Then connect the charging adapter to an AC source. Second Step: Connect the -Magsafe 2 port to the device. The signal light turns on.
USB C Type C PD output support 20V,and PD charger's power greater than or equal to laptop's power.
USB-C connector: Type C (connect to USB-C Power Adapter) USB-C charge Power need 45W or more(including 45W), Such as:45W/61W/85W USB-C charger,Mobile phone usb C charger is not applicable,Battery pack is not applicable. NO Working.
When using Type-c to -magsafe 2, only type-c chargers greater than or equal to 45W can be used,If you use a type-c charger that is less than 45W, you cannot charge.
 
Detail: 
Material: Plastic
Power: 87-100W
Color: White
Length: 180cm/70.87in
 
Includes: 
1 * 87-100W Type C to -Magsafe 2 Cable

Note: 

Please allow 1mm errors due to manual measurement.

Due to the difference between different monitors, the picture may not reflect the actual color of the item.