Replacement AC adapter

[ingrowntoenail]

I recently obtained two HP ZBook Firefly 14 inch G8 (model #6H2B6AV) that have Windows 8 stickers on them so pretty old.  They did not include the AC adapters.  I'm not having any luck so far finding the correct one.  I've purchased a used one from eBay and a new one from Amazon, however both of the tips that plug into the laptop are too small.  

I've also read the maintenance and service guide but the part numbers referenced appear to be for the same type I've already tried that's too small.  The tip in the one I bought from Amazon says "4.5mm*3.0mm" (blue tip).

Can anyone point me in the right direction?  Thanks!

[Paul_Tikkanen · Accepted solution]

The 6H2B6AV product number you posted does not provide a complete parts list.

HP PartSurfer

I suggest that you enter the PC's serial number at the link below and see if it provides the part number for the A/C adapter. 

HP PartSurfer

I don't know why there would be Windows 8 stickers on the PCs..

They wouldn't be able to even run W8 or W8.1 with the hardware they came with.