# New zigbee hub or usb stick **URL:** \ **Category:** Off-Topic\ **Tags:** zigbee\ **Created:** [February 2, 2021, 1:06pm UTC](https://community.openhab.org/t/new-zigbee-hub-or-usb-stick/116143 "2021-02-02T13:06:35Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Penguin](https://community.openhab.org/user_avatar/community.openhab.org/penguin/32/41673_2.png) [@Penguin](https://community.openhab.org/u/Penguin)\ **Post date:** [February 2, 2021, 1:06pm UTC](https://community.openhab.org/t/new-zigbee-hub-or-usb-stick/116143/1 "2021-02-02T13:06:35Z")
Hi all, I just found out that the EM35x will no longer be supported by zigbee due to the 256k flash limit As I was thinking to get a new one for a while, I wonder what the best option to buy will be? Again a USB stick attached to the PI4 or an external hub (I have an Tradfre hub, but I don’t think I can use it?) And what brand/type? Thanks! ---
**Author:** ![chrismast](https://community.openhab.org/user_avatar/community.openhab.org/chrismast/32/66147_2.png) [@chrismast](https://community.openhab.org/u/chrismast)\ **Post date:** [February 2, 2021, 1:10pm UTC](https://community.openhab.org/t/new-zigbee-hub-or-usb-stick/116143/2 "2021-02-02T13:10:59Z")
I run a CC2531 with zigbee2mqtt on it. So far runs without issues connecting IKEA, Xiaomi and Tuya devices. ---
**Author:** ![Penguin](https://community.openhab.org/user_avatar/community.openhab.org/penguin/32/41673_2.png) [@Penguin](https://community.openhab.org/u/Penguin)\ **Post date:** [February 2, 2021, 1:13pm UTC](https://community.openhab.org/t/new-zigbee-hub-or-usb-stick/116143/3 "2021-02-02T13:13:44Z")
Hi, I read that the CC2531 is not compatible with ZigBee 3? ---
**Author:** ![chrismast](https://community.openhab.org/user_avatar/community.openhab.org/chrismast/32/66147_2.png) [@chrismast](https://community.openhab.org/u/chrismast)\ **Post date:** [February 2, 2021, 1:20pm UTC](https://community.openhab.org/t/new-zigbee-hub-or-usb-stick/116143/4 "2021-02-02T13:20:18Z")
Did not try zigbee 3 yet whereas it seems to work based on this [post.](https://community.openhab.org/t/zigbee-3-0-on-cc2531-with-z-stack-3-0-1-firmware/39627/5) ---
**Author:** ![Bruce\_Osborne](https://community.openhab.org/user_avatar/community.openhab.org/bruce_osborne/32/38531_2.png) [@Bruce\_Osborne](https://community.openhab.org/u/Bruce_Osborne)\ **Post date:** [February 2, 2021, 1:58pm UTC](https://community.openhab.org/t/new-zigbee-hub-or-usb-stick/116143/5 "2021-02-02T13:58:50Z")
> [@Penguin](#): > > Hi, I read that the CC2531 is not compatible with ZigBee 3? Is the Zigbee binding compatible with Zigbee 3? ---
**Author:** ![Penguin](https://community.openhab.org/user_avatar/community.openhab.org/penguin/32/41673_2.png) [@Penguin](https://community.openhab.org/u/Penguin)\ **Post date:** [February 2, 2021, 2:07pm UTC](https://community.openhab.org/t/new-zigbee-hub-or-usb-stick/116143/6 "2021-02-02T14:07:37Z")
According to the documentation, yes. ---
**Author:** ![chris](https://community.openhab.org/letter_avatar_proxy/v4/letter/c/958977/32.png) [@chris](https://community.openhab.org/u/chris)\ **Post date:** [February 2, 2021, 2:22pm UTC](https://community.openhab.org/t/new-zigbee-hub-or-usb-stick/116143/7 "2021-02-02T14:22:45Z")
> [@Penguin](#): > > I just found out that the EM35x will no longer be supported by zigbee due to the 256k flash limit True, but that is to allow it to add new features in future - ie for the new requirements that are soon going to be added to the standards. It doesn’t mean that it will not continue to work very well with all current features. Also note that the binding supports the newer Silabs chips as well - they generally work the same from the binding perspective. > [@Penguin](#): > > And what brand/type? Personally, I’d still highly recommend the Silabs chips as that is what all my commercial customers are using so it gets the most testing etc. > [@Penguin](#): > > Hi, I read that the CC2531 is not compatible with ZigBee 3? Out of the box that’s true, there are some firmware available that does implement ZB3.0, but note that this is also not supported any longer by the manufacturer (ie Texas Instruments). > [@Bruce\_Osborne](#): > > Is the Zigbee binding compatible with Zigbee 3? Yes, the binding will support ZigBee 3. However, note that a large part of this is actually implemented by the dongle, and not the binding. Many of the advanced features are only available currently with the EM35x / MG chips (ie Silabs). ---
**Author:** ![Penguin](https://community.openhab.org/user_avatar/community.openhab.org/penguin/32/41673_2.png) [@Penguin](https://community.openhab.org/u/Penguin)\ **Post date:** [February 2, 2021, 4:18pm UTC](https://community.openhab.org/t/new-zigbee-hub-or-usb-stick/116143/8 "2021-02-02T16:18:09Z")
Thanks for the clear answers! ---
**Author:** ![delid4ve](https://community.openhab.org/user_avatar/community.openhab.org/delid4ve/32/48527_2.png) [@delid4ve](https://community.openhab.org/u/delid4ve)\ **Post date:** [February 3, 2021, 5:38am UTC](https://community.openhab.org/t/new-zigbee-hub-or-usb-stick/116143/9 "2021-02-03T05:38:36Z")
If your going down the hub route I have just published a binding for sonoff. Their zigbee hub is 3.0 and although not integrated yet I have one turning up tomorrow (love Amazon) so it will be present very soon. I’m not sure what it will support but I have a couple of items that don’t work with the zigbee binding and my usb stick so took a punt as it’s only cheap (£15 on eBay). Can monitor here: > [@Ewelink / Sonoff Binding - New binding without flashing](https://community.openhab.org/t/ewelink-sonoff-binding-new-binding-without-flashing/116141/1): > > Control of sonoff and other brands using the ewelink platform. Local and cloud control is available. Device discovery included. 2.5.x and 3.x available The binding currently has limited device support listed below, however if you send me the debug log under ‘Discovery Response’ or the file created under userdata/sonoff after adding your account I will get them added. Please refer to the readme below. Pre-compiled Jar files are available for each branch (2.5.x and 3.x) Precompiled Jars: [h…](https://github.com/delid4ve/openhab-sonoff-compiled) ---
**Author:** ![tnemrap](https://community.openhab.org/user_avatar/community.openhab.org/tnemrap/32/61523_2.png) [@tnemrap](https://community.openhab.org/u/tnemrap)\ **Post date:** [February 3, 2021, 9:30am UTC](https://community.openhab.org/t/new-zigbee-hub-or-usb-stick/116143/10 "2021-02-03T09:30:06Z")
> [@chris](#): > > > [@Penguin](#): > > > > And what brand/type? > > Personally, I’d still highly recommend the Silabs chips as that is what all my commercial customers are using so it gets the most testing etc. Is there any specific device you can recommend? ---
**Author:** ![system](https://community-openhab-org.s3-eu-central-1.amazonaws.com/original/2X/6/6a52f2ac5d00e4c7b50471a354b3a9221188be90.png) [@system](https://community.openhab.org/u/system)\ **Post date:** [March 17, 2021, 1:30am UTC](https://community.openhab.org/t/new-zigbee-hub-or-usb-stick/116143/11 "2021-03-17T01:30:07Z")
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