Docking station for xps 7390

Thanks for trying to save me money but unfortunately I had already ordered it. I actually found it cheaper at a different site then the 130w. I appreciate you taking the time to try and help me decide what docking station to buy and educating me on different devices. 

Thanks again for all your help and suggestions.

@Sheryl66  Happy to help, and glad the 180W version didn't cost you any extra in this case.  But since you were kind enough to link that document, I reached out to an internal Dell Support rep I've worked with on issues in the past about that error.  He passed it along to the Documentation team, and they confirmed that it was an error and would be corrected.  No ETA yet, but hopefully the correction saves other XPS 13 owners some money.

My docking station came yesterday and I was able to set it up with no issues. So far everything seems to be working good including my speakers. I haven't played much with the software that always runs slow and freezes but I did try opening it and did a couple things with no lag. 
I have one question that perhaps you can answer. Do I have to keep the dock powered on at all times in an electrical outlet? Does keeping it connected to an electrical outlet reduce the lifespan of my laptop's batter?

@Sheryl66  The BIOS isn't so bad, but if you're not comfortable with it, Dell Power Manager would be able to make the adjustments I described.  You can search that name in the Microsoft Store app on your system, or here is the direct link.  Glad you're enjoying your dock!

OK. thanks.

Thanks for all that information. Not sure what I'll do since I'm a little nervous about going into the bios. 
And so far I'm loving this docking station. I love the fact that I don't have to open my laptop to turn it on and can also wake up my monitor without having to open the laptop. I think the machine even boots up a little quicker but I could be wrong. I think this is going to be a good investment. So glad you explained different features for me.

Looks like I already had that app installed on my laptop.

@heals  Quick correction to the above.  I just saw that you said "90W Nekteck".  I got rid of that charger a while ago because it was pretty big for what it was and also had a permanently attached cable, neither of which I liked, but at the time there weren't many 90W chargers.  The one I have now and greatly prefer is this one.  It has the same 90W max output, and it can deliver that all out of a single port, but it also has 2 ports, and when both are actually in use, it can split that power as 60/30 or 45/45.  Not all multi-port chargers support splitting power in more than one way.  But this charger now sits in my living room having replaced the Nekteck and covers all sorts of use cases.  Most of the time it's charging a laptop that's designed for 65W, but when I've also got my iPad charging, the split is 45/45, which is still enough to run my laptop at slightly reduced performance -- which is fine given how infrequently I need to charge my iPad and use my laptop at the same time anyway.  And it's much smaller than the Nekteck unit thanks to using GaN.  In fact it's much smaller than several other USB-C power sources that have lesser output and/or a single port.

And then for travel (back when we can travel again, anyway) I have this.  It's now the only charger I need on the road.  I travel with a laptop, iPad, iPhone, Apple Watch, AirPods, and USB power bank (this one, which incidentally can also charge a laptop).  I typically charge my laptop, phone, and watch every night, which means I always have one other port left, and that's typically fine for charging either my iPad, power bank, or AirPods -- none of which need to be charged every night.  Depending on which combination of devices I need to charge, I might use a USB-C or USB-A port for the phone, so I have a female USB-C to male USB-A adapter to accommodate that.  And when charging my laptop, some of those lower powered devices can be charged off my laptop's ports if I really need more ports.  It's a great product.

@heals  The most significant skim I've seen from multi-purpose adapters such as those is 15W.  You might find that the product specs or manual for your specific adapter include some sort of note around power passthrough.  If it claims "up to 100W passthrough", it may also say, "95W passed through from 100W source" or something.  But if you're looking at that 90W RAVPower adapter I have, which I still really like, then I can't imagine you'd have an issue.  A 45W skim for that adapter would be absurd, because 45W is enough to run your entire laptop with enough additional power to charge the battery at the same time.  So barring any interoperability issues between the products involved, I can't imagine you'd have a slow charger warning when using that 90W RAVPower charger with your adapter.  Good luck!

@jphughan thank you.  I will  buy the 90W ravpower charger thru Amazon.ca and see what happens.