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12-07-2022 08:05 AM - edited 12-07-2022 08:06 AM
Welcome to our HP User Forum!
[EDIT:] -My bad, I didn't read the Subject description first!
Your HP EliteBook 820 G4 Notebook PC according to: http://h10032.www1.hp.com/ctg/Manual/c05357611.pdf, specifies this AC power adaptor: "65 W HP Smart AC adapter (supports HP Fast Charging)".
You can purchase a quality AC power replacement adapter online, such as this example: Amazon.com: Charger for Hp is 13252 Laptop Power Cord Supply Replacement 65W 45W for Hp Pavilion Spe....
Hope this was helpful.
12-07-2022 11:23 AM
Yes, I think your notebook is new enough to support either model.
Here are the HP part numbers for both:
Intel Wi-Fi 6 AX200 802.11ax 2 × 2 Wi-Fi + Bluetooth 5 (non-vPro) HP part # L35282-005.
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