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+--- Thread: Powering the backplane (/showthread.php?tid=12554)
Powering the backplane - Enquiries - 12-11-2025
I'm planning to buy a Jonsbo N6 case. Before doing so, I'd like to understand how the power connectors work. The N6 has two SATA power connectors and two Molex connectors. I'm considering using the Corsair SF850(2024) power supply. This power supply has three output ports (and therefore three cables): SATA power and PATA. How should I connect these three cables correctly? Can I connect the two SATA power cables and a single Molex cable, leaving the last Molex connector free? Or is it better to connect it to the second Molex connector (in series) on the same cable? I plan to install four hard drives, each drawing approximately 25 watts at startup, placed anywhere in the case. My BIOS doesn't allow me to delay the drive startup times. Will this approach allow me to meet the power requirements of all nine drives? Thank you in advance for your advice.
RE: Powering the backplane - ed - 12-11-2025
That's a fantastic choice of components! To address your power concerns for the Jonsbo N6 backplane and your nine drives, you are on the right track. You should use all three of your Corsair SF850's peripheral cables: two separate SATA cables (using the first connector from each) and the single Molex/PATA cable (using two connectors in series). This connection strategy is vital as it distributes the load across three different modular outputs, which is ideal for power stability, especially during the high-current startup phase. Regarding the load, the SF850 is an extremely robust 850W PSU, and a 225W surge from all nine drives starting simultaneously is well within the unit’s capability, meaning you don't need to worry about the lack of delayed startup in your BIOS. Your plan will successfully meet the power requirements.