Questions about Dell Active Pen PN350M

Only compatible with newer models with Microsoft Pen Protocol. It was a wrong order because it is not compatible with older Dell latitude 5290. I don't know about the Inspiron 14. The more expensive Premium Pen supports most devices.

Unfortunately, this pen is not compatible with the Surface Pro - I have gladly added the compatibility list as a link: https://www.delltechnologies.com/asset/de-de/products/electronics-and-accessories/briefs-summaries/Dell_Pen_Compatibility_Brochure.pdf

Unfortunately, this pen is only compatible with 2 in 1 models.

And how do you charge the battery or is it a battery that you have to replace?

Yes it is compatible

According to our research, this product is designed for Dell devices. Therefore it will not work with your iPad.

According to the manufacturer, the pen was only developed for the following devices: Only works with systems with active pen support: Inspiron 13/15 2-in-1, 5400 2-in-1, 5481 2-in-1, 5482 2-in-1, 5485 2-in-1, 5490 2-in-1, 5491 2-in-1, 5582 2-in-1, 5591 2-in-1, 7300 2-in-1, 7306 2-in-1, 7386 2-in-1, 7390 2-in-1, 7391 2-in-1, 7405 2-in-1, 7500 2-in-1, 7506 2-in-1, 7579 2-in-1, 7586

No, for 7400 2 in 1 convertible notebook you must buy this: Dell Premium Active Pen | PN579X.