Precision 5550 power adapter, 90W or 130W?

Thanks for the quick reply. Yes it does have nVidia GPU. 

Why is Dell doing that so? Selling only 90W adapter to 5550's users and that will most likely trigger warning and reduce performance?

How about those users who have a broken adapter? if they request part replacement, will they also get the same 90W adapter? Or they have to spend more money to buy 130W PD docks? 

@sh2sg  I'm not sure why you're having trouble finding Dell's 130W USB-C adapter.  That does seem like an error of some kind.  But if you're in the US, here is a direct link to the correct adapter.  If you had an actual warranty replacement, then Dell would replace it with the same part.  Or if they accidentally sent a 90W adapter, then you would certainly be able to get it exchanged for the correct part.

So I contacted Dell, they didn't tell why they are not selling 130W AC adapter in my region (Singapore) but they  can offer me a personal quotation to purchase the 130W AC adapter directly from spare part quotation team... is it normal?

@sh2sg  I wouldn't call it "normal" to not offer the appropriate power adapter through a regular online store, but I've purchased parts through Dell Spare Parts many times in the past.  That's usually for parts that are not really meant to be replaced by the individual user, like replacement keyboards, display assembles, plastic chassis components, etc.  But if Dell Spare Parts can get that part for you, then go for it.

What happens if you run a 5550 with nvidia graphics with a 90w charger? Or a 65w?

Hello if you don’t use the recommended battery wattage you will wind up getting a warning in the diagnostics or in the biopsy may say that it’s discharging

@APersonWithALaptop  You'll likely see slower battery charging, and possibly reduced performance especially if running a workload that involves the CPU and NVIDIA GPU.  And in very heavy load cases and/or in cases of significant power budget shortfalls like 65W for a system designed for double that amount, the system might drain the battery for auxiliary power even while connected to AC.  But that's a last resort since that is of course not a sustainable way to operate, which is why the system will throttle performance first.

We have purchased over 10 of these Precision 5550's and I feel like I should add a few notes worth mentioning, speaking from experience.  I've seen the  "slow charging" notification come up many times, even in cases where we are using the 130W provided AC Adapter.  We have some folks that use the U2722DE and U2721DC monitors for powering these laptops and the slow charging message comes up, but they are typically provided with enough power to run all of their applications, including some resource intensive applications (i.e. AutoCAD).  

Will a 240W adapter work with the Precision 5550 with a WD19TB?

I know I'm late to the party, but I've been running Precision 55xx laptops for 6 years now. I always purchase an addition 90W power supply (usually after market to get the smallest possible) to run on airplanes. Must aircraft onboard power systems don't let you charge with anything that requires over 90W.

Even with the NVIDIA GPU and despite the BIOS warning (which can be turned off), the laptop will charge (maybe more slowly) to make it through those long flights.