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- Hp probook 4420s upgrade

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08-21-2018 12:28 AM
Hi,
The probook comes in many configurations and I do not know what CPU/ RAM etc... yours has. On page 87, you can see a list of compatible processors and on page 88 the steps to replace the processor (remember to remove old thermal material between heatsink and Chips and replace with quality product).
Max RAM is 8GB of DDR3 1333Mhz (2x4GB), you can see various configurations on page 3 of service manual.
You could also replace the hard drive with an SSD which would increase everyday performance. You can see the steps to replace drive on page 74 of service manual.
Service manual:
http://h10032.www1.hp.com/ctg/Manual/c03471258
Let me know if you need further help,
David
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