Can anybody tell me how long this cable is in inches ?

The actual cable portion is 4.75 inches. The USB connector housing on one end is 1.5 inches. The Surface connector housing on the other end is 1.75 inches.

Why not just plug the usb c cable into the usb c charging port?

If your Surface has a USB C port you can but depending on the charger and cable it can be very slow, Microsoft does not seem to recommend it. This cable works great with the right charger.

Is this compatable with Surface Go 3?

hello, this cable is compatible with surface go 3, but you must use a 15v 30w charger. You can see this bundle: https://www.amazon.com/dp/B0BXT2HCPG

What's the maximum number of watts that this cable will deliver? can it deliver 100 w from a 100 w charger, or will it only deliver a maximum of 45 w?

The surface have two charging powers 15v2.58A and 15v4a, the maximum power of my cable is 15v2.58A. Most usb-c chargers do not have the power of 15v4a. Basically, the nominal value of 60w is 20V3A. The surface requires 15V, so 15V4A is actually not available in USB-C charger. In fact, 15v2.58a is enough, the surface cannot work at full load for a long time, and the daily office power is only about 20-30W.

ASIN	B07ZPDNJ7H
Best Sellers Rank	#3,745 in Computers ( See Top 100 in Computers ) #3 in Tablet Chargers & Adapters
Brand	Sisyphy
Brand Name	Sisyphy
Cable Type	HDMI
Cable type	HDMI
Color	black nylon
Compatible Devices	Microsoft Surface Pro 7, 6, 5, 4, 3, Laptop 1, 2, Go 2
Compatible Phone Models	Microsoft Surface Pro 7, Microsoft Surface Pro 6, Microsoft Surface Pro 5, Microsoft Surface Pro 4, Microsoft Surface Pro 3, Microsoft Surface Laptop 1, Microsoft Surface Laptop 2, Microsoft Surface Laptop 3
Compatible devices	Microsoft Surface Pro 7, 6, 5, 4, 3, Laptop 1, 2, Go 2
Compatible phone models	Microsoft Surface Pro 7, Microsoft Surface Pro 6, Microsoft Surface Pro 5, Microsoft Surface Pro 4, Microsoft Surface Pro 3, Microsoft Surface Laptop 1, Microsoft Surface Laptop 2, Microsoft Surface Laptop 3 Compatible phone models Microsoft Surface Pro 7, Microsoft Surface Pro 6, Microsoft Surface Pro 5, Microsoft Surface Pro 4, Microsoft Surface Pro 3, Microsoft Surface Laptop 1, Microsoft Surface Laptop 2, Microsoft Surface Laptop 3 See more
Connectivity Technology	USB
Connector Gender	Male-to-Female
Connector Type	Usb-c, Surface Connect
Connector type	Usb-c, Surface Connect
Customer Package Type	Individual, Protective Packaging
Customer Reviews	4.0 out of 5 stars 658 Reviews
Ethernet Cable Category	Cat 5
Indoor Outdoor Usage	Indoor
Item Shape	Round
Item Weight	0.02 Kilograms
Manufacturer	Saiteng
Maximum Current	3 Amps
Maximum Voltage	15 Volts
Model	sb10
Model Name	Sisyphy Surface Charging Cable
Number of Items	1
Number of Pins	39
Other Special Features of the Product	Portable
Outer Material	Nylon
Recommended Uses For Product	Charging
Special features	Portable
Specification Met	IEC, RoHS, UL
UPC	631661305526 632016511289
Unit Count	1 Count
Wattage	45 watts

Sisyphy Nylon Braided Surface Connect to USB-C Charging Cable Dongle, Requires 45W 15V3A USBC Charger PD Power Supply, Compatible With Microsoft Pro7 Pro6 Pro5 Pro4 Pro3 Laptop2 Go2

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