Update v3.md (#718)

Added verbiage for clarity
2022-04-24 08:05:02 -07:00 · 2022-04-24 08:05:02 -07:00 · ac93dc0705
parent 1d4fdb3d6f
commit ac93dc0705
1 changed files with 3 additions and 0 deletions
--- a/docs/v3.md
+++ b/docs/v3.md
@ -165,6 +165,9 @@ To manage the power of your computer, you will need to install an ATX adapter bo
    19. **1-Wire** & **Neo-pixel** interface (under, advanced user feature).

 ??? note "GPIO pinout"
+
+!!! warning "Before proceeding, make sure that the mb you are using has normal ATX headers"
+
    * **ATX control**
      - `power led = GPIO 24` - Used for reading the host power state.
      - `hdd led = 22` - Same for the HDD activity.