# Power supply can cause slow Homey Pro 2023 **URL:** \ **Category:** Questions & Help\ **Tags:** homey-pro-2023\ **Created:** [March 23, 2023, 4:22pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279 "2023-03-23T16:22:42Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![Morgan](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/morgan/32/15416_2.png) [@Morgan](https://community.homey.app/u/Morgan)\ **Post date:** [March 23, 2023, 5:33pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/21 "2023-03-23T17:33:29Z")
I have tested three different adapters. ![Screenshot_20230323_175609_Samsung Internet](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/f/d/fd783e668d12bede9e7bb8529b03d6d1ecec42b6.jpeg) ---
**Author:** ![Sharkys](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sharkys/32/54029_2.png) [@Sharkys](https://community.homey.app/u/Sharkys)\ **Post date:** [March 23, 2023, 5:36pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/22 "2023-03-23T17:36:53Z")
> [@Henk\_Renting](#): > > Clearly the current connected supply is not sufficiënt Soon I will test with 33W adapter, just purchasing it, if my HP2023 will boot up without giving me timeouts everywhere, I will report back my experience … ---
**Author:** ![Hannes85](https://avatars.discourse-cdn.com/v4/letter/h/e79b87/32.png) [@Hannes85](https://community.homey.app/u/Hannes85)\ **Post date:** [March 23, 2023, 5:37pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/23 "2023-03-23T17:37:54Z")
Sorry; I mean restarting and/or power off/on to see if it flips back the switch ---
**Author:** ![Henk\_Renting](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/henk_renting/32/87634_2.png) [@Henk\_Renting](https://community.homey.app/u/Henk_Renting)\ **Post date:** [March 23, 2023, 5:38pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/24 "2023-03-23T17:38:18Z")
Do you guys think that a power supply that follows the Power Delivery or Quickcharge specification (with at least 15W) should work too? Do they deliver a “normal” 15W when a non PD/QC device is connected? ---
**Author:** ![Henk\_Renting](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/henk_renting/32/87634_2.png) [@Henk\_Renting](https://community.homey.app/u/Henk_Renting)\ **Post date:** [March 23, 2023, 5:40pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/25 "2023-03-23T17:40:46Z")
> [@Hannes85](#): > > I mean restarting and/or power off/on to see if it flips back the switch I know, but as I haven’t found a power supply that can deliver sufficient power yet, I can not tell of the value is reset or not. I can’t tell if it didn’t reset the value or that the underclocking happens right away after restarting. ---
**Author:** ![Eibo](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/eibo/32/16812_2.png) [@Eibo](https://community.homey.app/u/Eibo)\ **Post date:** [March 23, 2023, 5:50pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/26 "2023-03-23T17:50:42Z")
Argh, just received the e-mail that my HP23 that was supposed to ship today but are postponed three weeks because of the powersupply issue. I’ve enough powersupplies to my other RPI4’s to power the HP23 with sufficient power, so this is not especially welcome for me ---
**Author:** ![Henk\_Renting](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/henk_renting/32/87634_2.png) [@Henk\_Renting](https://community.homey.app/u/Henk_Renting)\ **Post date:** [March 23, 2023, 5:53pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/27 "2023-03-23T17:53:36Z")
> [@Hannes85](#): > > I mean restarting and/or power off/on to see if it flips back the switch Found one! My iPad charger did flip (both) switch(es) back to “ false”. Still CPU clock fluctuates a lot, so that charger is not really a good option. But now we know these values are reset at a power cycle. ---
**Author:** ![Ad\_Hermus](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ad_hermus/32/72242_2.png) [@Ad\_Hermus](https://community.homey.app/u/Ad_Hermus)\ **Post date:** [March 23, 2023, 6:12pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/28 "2023-03-23T18:12:12Z")
How long do we have to wait now. I find it frustrating you already prolonged youre test period. But no problem for homey the money is in the pocket. ---
**Author:** ![DGalama](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/dgalama/32/10402_2.png) [@DGalama](https://community.homey.app/u/DGalama)\ **Post date:** [March 23, 2023, 6:23pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/29 "2023-03-23T18:23:48Z")
I bought the HP2023 because of the supposedly improved Zigbee performance. As is turns out so far, Zigbee performance is even worse than with my HP2018. Could this be related to the power adapter too? I replaced it (with the result below) but I still have flaky Zigbee devices. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/8/4/840bce9046c88f5925018a35ee50b743c0049769.png) ---
**Author:** ![wesley\_w](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/wesley_w/32/10127_2.png) [@wesley\_w](https://community.homey.app/u/wesley_w)\ **Post date:** [March 23, 2023, 6:47pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/30 "2023-03-23T18:47:57Z")
Never noticed a problem. Was using another PSU than the USB-C that came in the box. My previous model was the HP2016 so for me it was a big change in speed already. My HP2023 is very stable also the zigbee part…But will test with another PSU also. ![2023-03-23 19_44_30-Homey Developer Tools](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/e/f/efae3f7e6826244d8184c9aa7fe86a60713286b3.png) ![2023-03-23 19_55_40-Homey 2023](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/a/d/ad46bb071a1bd782c796e3d828f3d1775092390c.png) ---
**Author:** ![spkesDE](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/spkesde/32/54352_2.png) [@spkesDE](https://community.homey.app/u/spkesDE)\ **Post date:** [March 23, 2023, 6:48pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/31 "2023-03-23T18:48:36Z")
Contact the Athom support and ask 🙂 ---
**Author:** ![Eibo](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/eibo/32/16812_2.png) [@Eibo](https://community.homey.app/u/Eibo)\ **Post date:** [March 23, 2023, 6:50pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/32 "2023-03-23T18:50:47Z")
Yeah, I’ll try to send them a request. Not gonna kill me if I do 😉 ---
**Author:** ![Sharkys](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sharkys/32/54029_2.png) [@Sharkys](https://community.homey.app/u/Sharkys)\ **Post date:** [March 23, 2023, 7:14pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/33 "2023-03-23T19:14:38Z")
@Henk_Renting so I guess it’s obvious… with new adapter, 1.5GHz, with old one…0.6GHz… ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/9/a/9a88c5c9a1fe599a5854fd44060ece6b4baf935c.png) Power consumption wise it’s however not so significant…peaks are for 33W USB-C about 1A max…with original adapter I quickly measured about 0.7A max… (but really measured quickly, 30% less performance - yet, 1A is not 15W, it’s 5W - so I wonder why that original adapter is not sufficient, probably it’s caused by the power peaks) Some readings with the new 33W adapter : ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/d/6d7f5b37cc9edd83ec0b41afeab1a8a5fe4caf13.jpeg) ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/e/6/e6e6c2711d7ceb0d5948d4948f242a7f55214b88.jpeg) …and also fresh restore , no timeouts and all values FALSE: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/f/7/f73f8b0166701ad4f467a0efc6ce3c3abfe5757b.png) ---
**Author:** ![Peter\_Thornton](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_thornton/32/5109_2.png) [@Peter\_Thornton](https://community.homey.app/u/Peter_Thornton)\ **Post date:** [March 23, 2023, 8:58pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/34 "2023-03-23T20:58:32Z")
I tried with a 100W PD supply and it still throttles. I suspect the PD supplies won’t deliver the 5.2V that Homey is expecting - AFAIK it’s not part of the spec. ---
**Author:** ![spkesDE](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/spkesde/32/54352_2.png) [@spkesDE](https://community.homey.app/u/spkesDE)\ **Post date:** [March 23, 2023, 9:01pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/35 "2023-03-23T21:01:41Z")
> The CM4 is _very_ picky, and there’s some voltage drop over the cable and pcb. That`s what Emilie said on the developer hp2023 slack. So it’s has to be a power supply that is really good. ---
**Author:** ![Henk\_Renting](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/henk_renting/32/87634_2.png) [@Henk\_Renting](https://community.homey.app/u/Henk_Renting)\ **Post date:** [March 23, 2023, 9:13pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/36 "2023-03-23T21:13:35Z")
I just ordered the original Raspberry power supply, as suggested by Emile. I’ll keep you posted! ---
**Author:** ![Peter\_Thornton](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_thornton/32/5109_2.png) [@Peter\_Thornton](https://community.homey.app/u/Peter_Thornton)\ **Post date:** [March 23, 2023, 9:33pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/37 "2023-03-23T21:33:59Z")
> [@Henk\_Renting](#): > > I just ordered the original Raspberry power supply, as suggested by Emile. Took a RPi supply and the clock vent up instantly and I don’t get the UnderVoltageOccured. So it will probably fix it for you as well. ---
**Author:** ![Sharkys](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sharkys/32/54029_2.png) [@Sharkys](https://community.homey.app/u/Sharkys)\ **Post date:** [March 23, 2023, 9:49pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/38 "2023-03-23T21:49:24Z")
I just wonder, is it VOLTAGE (Volts) or CURRENT (Amperes) issue ? Just becuase it says “videoCoreUndervoltageOccured”…mail speaks about “voltage” as well… Because if it’s about voltage, it will be not resolved so easily I guess. ---
**Author:** ![spkesDE](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/spkesde/32/54352_2.png) [@spkesDE](https://community.homey.app/u/spkesDE)\ **Post date:** [March 23, 2023, 9:55pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/39 "2023-03-23T21:55:33Z")
The PCB and Cable “steal” about 0.1 volts, which is enough to cause an underclocked condition, so the problem is a voltage one. ---
**Author:** ![Sharkys](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/sharkys/32/54029_2.png) [@Sharkys](https://community.homey.app/u/Sharkys)\ **Post date:** [March 23, 2023, 10:01pm UTC](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279/40 "2023-03-23T22:01:36Z")
Hm, I just measured it and it shows always 5.22V with the new adapter - regardless of the cable, LAN adapter or directly connected to the power adapter (didn’t measure it yet under load) - unfortunately while I’m trying to restore my ZigBee, I start seeing RED RINGs… [Previous page](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279.md?page=1) [Next page](https://community.homey.app/t/power-supply-can-cause-slow-homey-pro-2023/78279.md?page=3)