Hello
you must have this motherboard?
Lincs motherboard specifications.
It is mention
TDP: 65 W
Socket type: LGA1151_CFL
if we compare the two models, in theory this should work
https://ark.intel.com/content/www/fr/fr/ark/products/134895/intel-core-i5-9500-processor-9m-cache-up...
tdp 65 W FCLGA1151
https://ark.intel.com/content/www/fr/fr/ark/products/126687/intel-core-i5-8400-processor-9m-cache-up...
Unfortunately no guarantee, we cannot certify it here
If you know what you're doing, normally other than it doesn't work, very little risk
it's up to you to see if you test or not!
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Attention
A bios update is not without risk!
Be aware that if you are offered to do so, it will be at your own risk, the computer may become unusable, think about it
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