Looking for a Strong Docking Station, for Dell Precision 7680, that can connect to 4 external monitors to work simultaneously.

The best of the Dell docking stations is going to have some limitations, so you'll need to prioritize what you need.  You won't find all of what you're looking for in a single docking station.

If your Precision shipped with a 240W AC adapter, no external docking station will supply the power it needs -- you will need a separate connection to the system from the OEM AC adapter to power the system.

Even the WD22TB4 will natively support only three monitors -- it can allow driving a fourth, if the monitors you have support daisy chaining.  

You're not specific about the "6 different peripherals" but if they're all USB, you're also going to need some additional ports -- if the monitors you have or intend to buy have a built in USB hub, that will work, but the dock itself will not allow six simultaneous USB devices to be connected.

Documentation is here:

https://www.dell.com/support/home/en-uk/product-support/product/wd22tb4-dock/docs

@ejn63​

It is thin chassis 180W

4 monitors

I'll use a hub for extra devices

How can I connect all these together? 

Preferably with a switch to a second laptop

Thank you very much!! 

Answers in the manual for the WD22TB4 docking station.

https://www.dell.com/support/manuals/en-us/wd22tb4-dock/dell_wd22tb4_userguide/introduction?guid=guid-6a2b0daa-a6ca-4ae3-8962-66ce299ac340&lang=en-us