Polarity for IOMEGA ix4-200d Power Adapter

Can anyone tell me (ideally LINK me to a document proving) the polarity of the center tip for the Power Supply of an IOMEGA ix4-200d NAS device?  I've got the voltage and amperage, but I can't seem to find polarity...
LVL 98
Lee W, MVPTechnology and Business Process AdvisorAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

JohnBusiness Consultant (Owner)Commented:
I cannot find any definitive source. Here:
https://www.ebay.com/itm/AC-Adapter-For-Iomega-StorCenter-Ix4-200d-31848000-NAS-19V-4-74A-DC-Power-Supply-/351655271967

The DC Tip is a barrel tip and the power supply appears to be North American.
All such tips I have seen (lots in my basement here) are all negative barrel, positive tip.
0
Dr. KlahnPrincipal Software EngineerCommented:
If you have the original adapter, look on the name plate (sometimes this is laser engraved into the plastic and difficult to read).  Sometimes this is also seen next to the DC socket on the equipment itself.

There will be a symbol on it that  looks like the one below:

AC adapter polarity symbols
Chances are it will look like the one on the left, which is tip positive, ring negative.  It's been a long time since I have seen anything else.  The electronics industry has largely standardized on tip positive, ring negative, which is a blessing as it wasn't so long ago when it could be either way, 50/50 chance of blowing up anything a random adapter would fit.
0
Lee W, MVPTechnology and Business Process AdvisorAuthor Commented:
I don't have the original adapter and all the ebay and other pics blur out the tip polarity.

I took a shot and used an Enercell Laptop Universal Adapter using tip 32 (FWIW).  That worked.  It's the same tip/polarity as Acer Travel Mate 210 (and a 100 other models, give or take), and that worked.  Correct polarity and voltage.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
NAS

From novice to tech pro — start learning today.