Front panel PWR_LED uses MB voltage?

F5F Stay Refreshed Hardware Desktop Front panel PWR_LED uses MB voltage?

Caribbean_Blue
Senior Member

609

12-18-2018, 01:23 PM

Hi, I aim to construct a PC power switch that blends into the desk base, making it unnoticeable. The concept involves placing it at the bottom so it appears hidden. Switch layout should match the design: I need to identify the correct model for compatibility, considering various LED voltages such as 3.3V, 5V, 6V, 12V, 24V, etc. The switch will connect to PWR_SW and direct power to PWR_LED pins. The motherboard is MSI B450 Mortar Titanium, but voltage details for PWR_LED aren't listed in any specifications, datasheets, or manuals provided by MSI or included with the board. Thanks a lot.

Caribbean_Blue

12-18-2018, 01:23 PM #1

sammie538
Junior Member

12-18-2018, 06:19 PM

Use a voltmeter for accurate readings. If you're performing such tests, you'll need one.

sammie538

12-18-2018, 06:19 PM #2

Use a voltmeter for accurate readings. If you're performing such tests, you'll need one.

NoobGirlPT
Member

12-25-2018, 11:58 PM

Motherboards usually include the LED resistor internally, so choose a 3.3 voltage setting to keep brightness stable.

NoobGirlPT

12-25-2018, 11:58 PM #3

Motherboards usually include the LED resistor internally, so choose a 3.3 voltage setting to keep brightness stable.

TaBaRiTo
Member

12-31-2018, 10:07 AM

I'll take one from work and give it a try.

TaBaRiTo

12-31-2018, 10:07 AM #4

I'll take one from work and give it a try.

TheNeroy
Member

12-31-2018, 12:06 PM

I rely on that figure, 3.3 is my top option. However, it would be wiser to check if anyone has already handled this.

TheNeroy

12-31-2018, 12:06 PM #5

I rely on that figure, 3.3 is my top option. However, it would be wiser to check if anyone has already handled this.