Question 1

Will this docking station be compatible with a Surface Pro 6?

Accepted Answer

Hello. You'd be better off buying the Microsoft version of this dock designed for the surface. They use a magnetic connector only used on their devices. This may work but not at well as the one you'd get from Microsoft.

Question 2

Dell website says the WD15 should also be compatible with Precision series, but don't see it here. will this work with Dell Precision 5520 ?

Accepted Answer

It should work fine. The differences I see between the WD15 & the WD19 is the number & type of ports plus the way the power supply connects to the dock. WD15 has a separate PS whereas the WD19 PS is hooked right to the dock. 
WD19 interfaces: 
2 x display / video - DisplayPort - 20 pin DisplayPort
1 x display / video - HDMI - 19 pin HDMI Type A
1 x USB-C
3 x USB 3.1 Gen 1 - 9 pin USB Type A
2 x USB-C 3.1 Gen 2
1 x speakers - output - mini-phone 3.5 mm
1 x headset - output - mini-phone 3.5 mm
1 x network - Ethernet 1000 - RJ-45

WD15 Interfaces:
2 x USB 2.0 - 4 pin USB Type A
3 x SuperSpeed USB 3.0 - 9 pin USB Type A
1 x display / video - HDMI - 19 pin HDMI Type A
1 x display / video - Mini DisplayPort - Mini DisplayPort
1 x network - Ethernet 1000 - RJ-45
1 x headset - output - mini-phone 3.5 mm
1 x audio - output - mini-phone 3.5 mm
1 x video - VGA - 15 pin D-Sub (DB-15)

Question 3

support two displays?

Accepted Answer

Hello,

Thank you for contacting us in regards to your question.

Yes, it will indeed support two displays thanks to the HDMI and Mini DisplayPort at the back of the PC.

Thank you, 
Newegg Support

Question 4

Can you tell me model and mfg #?  I need 452-bddv. #R8JC8

Accepted Answer

no

Color	Black
Compatibility	Compatibility: Dell Notebooks/Tablet PCs: Inspiron 13 5000 Series (5368), Inspiron 13 7000 Series (7368), Inspiron 15 5000 Series (5568), Inspiron 15 7000 Series (7569), Inspiron 17 7000 Series (7778), Latitude 11 (5175), Latitude 11 (5179), Latitude 7275, Latitude 7370, Venue 10 Pro (5056), Venue 8 Pro (5855), XPS 12 (9250), XPS 13 (9350).
Ports Spec	HDMI / DVI / VGA

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Dell WD15 Monitor Dock 4K with 130W Adapter, for Notebook/Tablet PC - USB Type C (DELL DOCK-130W, 450-AFGM)

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Item#: 9SIA4A0KBC8436