Can you list full build and part used make and model of PSU as wellI didn't connect cpu_pwr1 and cpu_pwr2. If I connect both or only cpu_pwr1 (4*2) nothing works: no fan or lights. If I connect only cpu_pwr2 it boots into bios settings. My M.2 SSD is detected, but my Samsung 840EVO SSD is not. Too old? For what do you need these 8 SATA connections than old drives?
I have 6 SATA III SSD in my system used for storage, so they are of use as you may need the extra storage, With most Motherboards only having one or two M,2 Drives having the sata allows one to add extra drives as neededFor what do you need these 8 SATA connections than old drives?
Maxpro II is classed as "Tier E • Avoid" on the PSU tier list. This is the second-lowest rating, just above "Replace immediately", and very clear sign of a bad PSU model.Power supply: Enermax Maxpro II atx 400Watt
400 watt PSU on a CPU that can pull over 220 watts ya that will be a problem pleas look for 650 watt or better if you plan to upgrade the GPU to high end you will need 750 to 850I just had to make some changes in the system settings (CSM) and change the SATA slot used, thereafter I could boot from that old SATA SSD.
On my previous computer I used a 4.0 PCIE adapter card placed in my motherboard to use an M.2 drive. You had to boot from another drive.
I still haven't CPU_PWR1 connected; maybe it is only needed for updates. Not very practical because it is very difficult to reach and see.
Power supply: Enermax Maxpro II atx 400Watt
Corsair Vengeance LPX 32GB (2 x 16GB) DDR4 3600 (PC4-28800) C18 1.35V
Cooler: Noctua NH-U12S Redux
Graphic card: MSI N730K-2GD3H/LPV1 NVIDIA GeForce GT 730
I determined these 400 Watt using a calculator (https://netzteil-rechner.net/r/ba8rS) where I specified all the components of the computer.400 watt PSU on a CPU that can pull over 220 watts ya that will be a problem pleas look for 650 watt or better if you plan to upgrade the GPU to high end you will need 750 to 850
Now I understand the problem. I used the PCI-E 6+2 Pin for the 8 pins CPU power. When I put the other CPU 4 pins there, it still works. They are somehow different. That is at least something I can use to select another power supply.
They look the same. The only difference is were exactly square shaped pins are located. To put5 the 6+2P PCI express connector into the CPU-8 socket you have to put some thinner pins into square shaped holes. It is not more difficult than using the 4+4P CPU connector.