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Jonathanx60
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Z420 motherboard Front panel connectors into regular ATX case.

HP Recommended
Z420
Microsoft Windows 10 (64-bit)

I just transplanted a HP 420 MOTHERBOARD into a thermaltake jasper v24 case. After I headache reading hp manuals I was able to connect power SW, hdd Led, etc BUT reset pq I couldn't. I read somebody said RESET button is not needed on this motherboard. I'm ok with that. Now after getting the MoBo powered on I have this screen 

20210204_235257.jpg

 3. 0 port is connected and all fans are working properly so, I don't understand.

 

Thanks in advance for all your help. Sorry sideways picture. 

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Jonathanx60
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20210204_235257.jpg

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Jonathanx60
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20210205_120256.jpg

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Smeden
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The Z420 motherboard detects the presence of I/O and fans.

You cannot bypass theese warnings permanently in Bios, but you can always press F1 to ignore the warning and continue to boot.

 

Otherwise you will need to continue the transplant process and move the I/O and fans as well.

( You can use other 4-pin fans, as long as they aren't too slow. ( errors and/or throttling will occur. )

 

Other HP Z420 transplant surgeons reading this should be warned before buying a new case for their Z420.

This isn't an easy task since the Z420 motherboard doen't comply exactly with ATX specs.

( mounting holes in the middle of the board are located a bit different than normal ATX! )

Also the HP-PSU is physically larger than standard ATX and the motherboard connection uses special signaling.

=> Using a normal ATX PSU is possible, but only with a special adapter cable.

 

The CPU fan connector is proprietary ( an extra tacho connection is used to verify that the waterpump is running. )

On systems without watercooling a jumper on the connector "mirrors" the fan speed to trick the fan/pump -monitoring.

 

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