Does my HP Z240 400W PSU support the official hp 6-pins to 8

I am researching parts for a new build and would like to use an EVGA 850 SLX PSU with an RTX 3080 Given the PCI-e slot already provides 75w,

HPE 800W Flex Slot Power Supply with 96% efficiency, 200-240V AC input, 80 Plus Titanium certified Choice of -48 VDC HPE Flex

jumanji slot online Yes A larger PCI express slot fits all smaller PCI express cards That means you can plug an x1, x2, x4 or x8 card into an x16 slot, x4 card

lars seier slot Not entirely sure I have RM650x There is no manual! And markings on the PSU are confusing! I am sure I connected PCI-E cables to a