# \[APP\]\[Pro\] sysInternals - Shows Homey’s System Internals

**URL:** <https://community.homey.app/t/app-pro-sysinternals-shows-homey-s-system-internals/78650>\
**Category:** Apps\
**Tags:** app, homey-pro, homey-pro-2023\
**Created:** [March 30, 2023, 5:37pm UTC](https://community.homey.app/t/app-pro-sysinternals-shows-homey-s-system-internals/78650 "2023-03-30T17:37:57Z")\
**Posts on this page:** 1\
**Showing post:** 57

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**Author:** ![Dijker](https://avatars.discourse-cdn.com/v4/letter/d/b9bd4f/32.png) [@Dijker](https://community.homey.app/u/Dijker)\
**Post date:** [April 15, 2023, 7:07pm UTC](https://community.homey.app/t/app-pro-sysinternals-shows-homey-s-system-internals/78650/57 "2023-04-15T19:07:03Z")

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> [@Wout-1976](#):
>
> warning Alarm Occured UnderVoltage Alarm something to worry about?  
> It goes on and off random.

Yes, the Clock probably goes down to ~600 Mhz where with a 5 Volt at Homey’s CPU self it will run most of the time 1500Mhz. (And that low frequency slows down Homey ~ 2 to 2,5 times )

> [@Dijker](#):
>
> TL;DR:
> 
> - Get Homey at least 5.0 Volt;
> - Use the (New \* to be send) Original Athom Adapter;
> - Use the Original Athom Cable;
> - Check cables for damage;
> - Test without Ethernet Adapter;
> - and maybe Test with another Adapter better/shorter cables; (See Topic above)
> 
> If steps above didn’t work:
> 
> - Contact Athom Support (after April 2023 as Athom promised to provide a replacement Adapter)

Bad Cables or connectors drop easily 0,15 to 0,25 Volt (Shows a USB Analyzer)  
If a USB (A or C) provides ~5.25 Volt at max 10 Watt (~ 1800- 2000mA) that still provides 5.01 Volt at Homey internal. (at the CM4 module)

Homey doesn’t need more than ~ 0,85 A for 98% of the time (Shows the USB Analyzer…) even with the Ethernet Adapter. So everything higher rated than 10 Watt isn’t functional. Only during a Restart I have seen a short ~ 1.090 A less than 5 seconds.

Also read the other Post:

> [@\[Info\] USB Power Supplies and cables (for Homey Pro Early 2023)](https://community.homey.app/t/info-usb-power-supplies-and-cables-for-homey-pro-early-2023/78431/1):
>
> - ❌ Most USB-C adapters stick with ~ 5.0 Volt, you can probably skip them.
> - Most USB-A adapters have a slight higher voltage, around 5.1 to 5.2 Volt.

But Dutch saying: Meten is Weten 😉

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