Used original adapter for Microsoft surface book.
The Laptop is now in another country so this left alone adapter is available for sale.
spec: 15V 4.0A 60W main output
1* 5V 1A USB out put
along with 2 pens. 1 rarely used + 1 totally new and unpacked
you can offer a price
PM whatsapp and deal at Whampoa MTR station