SER8 USB-C power

Kai

Hey folks can you help me to figure out this mystery please?

I’m trying to power a newly purchased SER8 with an USB-C power supply. It works perfectly fine with original 120W powerbrick but when I try to replace that with an USB-C supply it shuts down the moment I start cinebench.

I tried both the normal and boosted mode in BIOS
I tried a 100W PD3.0 and a 140W PD3.1 power supplies
I tried PD3.0 100W and PD3.1 240W certified cables
I tried to plug directly into the USB-C port at the back, and via a 5.5×2.5mm to USB-C adapter into the barrel jack socket

The PC boots fine in either case, but the moment I try to put it under any type of load the PC just shuts down instantly.

I have two of SER8 and a bunch of different powerbricks and the same thing happens every time, so it’s not an individual unit problem. and judging by my power meter it never peaks over 70w of power consumption, so either 100W or a 140W setups should technically be fine. And again the PC works fine with the original power block, so….

Halp? Any ideas? I would love the option to use a smaller power brick instead of the original chunker

support1

Try running other CPU - and GPU - intensive applications besides Cinebench to see if the same shutdown issue occurs. This can help determine if the problem is specific to Cinebench’s power - draw pattern or a more general issue with high - load power consumption.
External Power Management Devices: Consider using an external power management device that can condition and stabilize the power from the USB - C supply before it enters the PC.