They replied
Hi Matt,
Our power adapter for Dell S2419H is 12V 5A with 5.5mm*2.5mm connector.
This is a replacement power adapter but not original, please understand.
You could directly place order online with the link. We will ship out your order within 24 hours, and it usually takes 3-7 days for delivery.
https://www.partswindow.com/dell-ac-...s2419nx--p2497
Best Regards
Marina
Guess I'll get one of the Amazon ones, Perhaps the one zipulrich suggested, and cross my fingers.
Thanks