SKUs are different per market/region and sales channel but are all the same device:

You can also pre-order the new Microsoft USB-C Travel Hub. Note that this is a data-only hub and won’t charge your laptop even if you connect an external power supply. SKUs are:

While awaiting delivery, you can 3D print this CAD model of the Dock I whipped up or let your eyes glaze over with all the tech specs:

Dock 2 features across all supported devices:

• 199 watt power supply (15.35V @ 12.96A)
  • up to 120W power delivery to Surface Book 3 15″ (95W or less to other devices)
  • ~79 watts reserved for Dock power and USB ports:
    • 30 watts for 2 front USB-C downstream ports
    • 15 watts for 2 rear USB-C ports
    • 15 watts for 2 rear USB A ports
    • 19 watts for remaining dock operations (Ethernet, Audio, USB hub logic, DisplayPort MST hub logic, etc.)
  • 1m long detachable IEC 7 AC/Mains power cable
• 2 front-facing USB-C 3.2 Gen2 ports each with:
  • up to 10 Gbps data
  • 15W power delivery (5V @ 3A)
• 2 rear-facing USB-C 3.2 Gen2 ports each with:
  • up to 10 Gbps data
  • 7.5W power delivery (5V @ 1.5A)
  • up to 4K60Hz monitor (see notes below)
• 2 rear-facing USB-A 3.2 Gen2 ports each with:
  • up to 10 Gbps data
  • 7.5W power delivery (5V @ 1.5A)
• 3.5mm combo audio in/out – TRRS with mono mic in and Stereo out (rear-facing)
• Gigabit Ethernet (rear-facing)
• 80cm Surface Connect cable (side facing)
• Kensington-compatible security lock receptacle (side-facing)

Dock 2 features dependent on device:

Surface modelMax dual Display
outputMax single Display outputUSB-A data transfer rateGo / Go 2
Pro (2017)
Pro 6
Laptop 1 / Laptop 2
Laptop Go
Book 2– 2x 4K30
– 4K60 + 1920x1080p60
– 2x 2560x1440p60
– 2x 4K50*
– 4K60 + 4K30*– 4K60
– 3440x1440p60
– 5120x1440p60*Up to 5 GbpsPro 7
Pro X
Laptop 3– 2x 4K60 or
– 2x 5120x1440p60*– 4K60
– 3440x1440p60
– 5120x1440p60*
– 5K60*
– 4K120*
– 8K30*Up to 5 GbpsBook 3– 2x 4K60 or
– 2x 5120x1440p60– 4K60
– 3440x1440p60
– 5120x1440p60*
– 5K60*
– 4K120*
– 8K30*Up to 10 Gbps

*Advanced resolutions available on many Intel Core i5/i7 and AMD models with updated GPU drivers and/or custom resolution tweaks via Intel/AMD command center apps or CRU tool

Not officially supported by Microsoft:

While not officially supported by Microsoft, these devices appear to function:

• Surface Pro 4
• Surface Book 1

Surface Pro 3 doesn’t work at all.

How to Connect HDMI or DisplayPort monitors?

See this USB-C HDMI/DisplayPort adapter guide

Resources: