Intel Motherboards - Z270 Taichi: output to turn on a LED preboot?

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Z270 Taichi: output to turn on a LED preboot?

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=11233
Printed Date: 05 Aug 2025 at 6:51am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Z270 Taichi: output to turn on a LED preboot?

Posted By: Redwine
Subject: Z270 Taichi: output to turn on a LED preboot?
Date Posted: 01 Apr 2019 at 4:31am

I want to wire my case's power_on LED so I can find it in the dark to turn on my PC. The mother board is a Z270 Taichi.

Has anyone done something like this?

Replies:

Posted By: Redwine
Date Posted: 10 Apr 2019 at 5:21am

Guess I'll be answering my own question.

The motherboard has a USB 3 A-Type female connector. The USB is powered prior to turning on the computer.

Parts List
Old USB 2 printer cable
560 ohm resistor
3-pin fan power cable extension.

The 3-pin fan power cable extension was used to connect the PC case's Power LED + and - connection.

The old USB 2 printer cable connected to the motherboard USB.

The 560 ohm resistor was used to limit current to the case's power switch LED.

Works just the way I need.