# USB hubs **URL:** \ **Category:** AllStarLink\ **Created:** [April 3, 2018, 1:33am UTC](https://community.allstarlink.org/t/usb-hubs/14141 "2018-04-03T01:33:36Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![N2YP](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/n/ecd19e/32.png) [@N2YP](https://community.allstarlink.org/u/N2YP)\ **Post date:** [April 3, 2018, 1:33am UTC](https://community.allstarlink.org/t/usb-hubs/14141/1 "2018-04-03T01:33:36Z")
Has anyone successfully used a USB hub for multiple nodes? If so what model have you used? Do we still need to locate a multi TT hub or do the newer usb 3.0 hubs work fine? John Rudolph Amateur Radio Op N2YP Unadilla,NY ---
**Author:** ![Ve3yca](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/v/f19dbf/32.png) [@Ve3yca](https://community.allstarlink.org/u/Ve3yca)\ **Post date:** [April 6, 2018, 5:39pm UTC](https://community.allstarlink.org/t/usb-hubs/14141/2 "2018-04-06T17:39:13Z")
The problem with USB Hubs are not the speed at all. It’s that hubs are 2.0, and USB Sound cards are 1.1 (Don’t believe what the specs say). ``` Most USB2.0 Hubs only have one translator from 1.1 to 2.0. This ``` is fine in normal situations because most devices are not real time. Our voice systems require multiple near-realtime data transfers which all have to share that one is “Multi-TT”. Multi-TT hubs usually (in the ones I’ve seen) have 1 translator per port instead of the single shared one. ``` I personally have used ``` both at home to support multiple USB Sound Cards for Mixing audio - and within the past 6 months put this one at VE3LSR with zero issues. ``` Choosing others, your millage will very, but look for a ``` “Multi-TT” Hub. Cheers and 73, ``` VE3YCA ``` > **···** > > [https://www.amazon.ca/gp/product/B00SZ2DPU2](https://www.amazon.ca/gp/product/B00SZ2DPU2) > On 4/2/18 9:33 PM, John Rudolph- N2YP > wrote: > > > ``` > > Has > > > > ``` > > > > anyone successfully used a USB hub for multiple nodes? If so what > > model have you used? Do we still need to locate a multi TT hub or > > do the newer usb 3.0 hubs work fine? > > > > ``` > > John Rudolph > > > > Amateur Radio Op N2YP > > > > Unadilla,NY > > > > ``` > > > > ```auto > > > > _______________________________________________ > > App_rpt-users mailing list > > To unsubscribe from this list please visit and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" > > You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem. > > > > ``` > > [App\_rpt-users@lists.allstarlink.org](mailto:App_rpt-users@lists.allstarlink.org)[http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users)[http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) ---
**Author:** ![David\_McGough](https://community.allstarlink.org/letter_avatar_proxy/v4/letter/d/7cd45c/32.png) [@David\_McGough](https://community.allstarlink.org/u/David_McGough)\ **Post date:** [April 6, 2018, 6:01pm UTC](https://community.allstarlink.org/t/usb-hubs/14141/3 "2018-04-06T18:01:37Z")
Yes, that model multi-TT hub works well. I've got several of them, they go by various brand names, but the same UH-217C-US model number. ...That model is getting scarce these days, unfortunately. 73, David KB4FXC > **···** > > On Fri, 6 Apr 2018, Jason Kendall wrote: > > > The problem with USB Hubs are not the speed at all. It's that hubs are > > 2.0, and USB Sound cards are 1.1 (Don't believe what the specs say). > > > > Most USB2.0 Hubs only have one translator from 1.1 to 2.0. This is fine > > in normal situations because most devices are not real time. Our voice > > systems require multiple near-realtime data transfers which all have to > > share that one is "Multi-TT". Multi-TT hubs usually (in the ones I've > > seen) have 1 translator per port instead of the single shared one. > > > > I personally have used [https://www.amazon.ca/gp/product/B00SZ2DPU2](https://www.amazon.ca/gp/product/B00SZ2DPU2) both > > at home to support multiple USB Sound Cards for Mixing audio - and > > within the past 6 months put this one at VE3LSR with zero issues. > > > > Choosing others, your millage will very, but look for a "Multi-TT" Hub. > > > > Cheers and 73, > > VE3YCA > > > > On 4/2/18 9:33 PM, John Rudolph- N2YP wrote: > > \> Has anyone successfully used a USB hub for multiple nodes? If so what > > \> model have you used? Do we still need to locate a multi TT hub or do > > \> the newer usb 3.0 hubs work fine? > > \> John Rudolph > > \> Amateur Radio Op N2YP > > \> Unadilla,NY > > \> > > \> > > \> \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ > > \> App\_rpt-users mailing list > > \> App\_rpt-users@lists.allstarlink.org > > \> [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) > > \> > > \> To unsubscribe from this list please visit [http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app\_rpt-users](http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users) and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button" > > \> You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem. ---
**Author:** ![w4bww](https://community.allstarlink.org/user_avatar/community.allstarlink.org/w4bww/32/2102_2.png) [@w4bww](https://community.allstarlink.org/u/w4bww)\ **Post date:** [July 14, 2024, 3:11am UTC](https://community.allstarlink.org/t/usb-hubs/14141/4 "2024-07-14T03:11:23Z")
Finally found this… Thanks. Hope, ASL3 thinks about and better explains the USB changes, I am having issues with mapping 2 or more nodes on a industrial PC with debain 12. Having to deep dive to understand why cant see both RA-40s. Im not great with Linux and all these community make it so hard to deep dive with “actual” good documentation. Maybe the AI can help ASL devs with that… Fingers crossed this helps me figure out why I can just tell 1:4 to be the node 1 and the other to be 1:5 etc ---
**Author:** ![N8EI](https://community.allstarlink.org/user_avatar/community.allstarlink.org/n8ei/32/4254_2.png) [@N8EI](https://community.allstarlink.org/u/N8EI)\ **Post date:** [July 14, 2024, 5:38pm UTC](https://community.allstarlink.org/t/usb-hubs/14141/5 "2024-07-14T17:38:05Z")
Have you tried running `asl-find-sound` to enumerate the available sound devices and their asterisk device codes. Note that `asl-find-sound` must be run as root or via `sudo(1)`. ---
**Author:** ![w4bww](https://community.allstarlink.org/user_avatar/community.allstarlink.org/w4bww/32/2102_2.png) [@w4bww](https://community.allstarlink.org/u/w4bww)\ **Post date:** [July 14, 2024, 10:33pm UTC](https://community.allstarlink.org/t/usb-hubs/14141/6 "2024-07-14T22:33:27Z")
yelp. no output at all… nada lsusb list 5 devices, 3 hubs, (ark-1123 by Advantech has manual) other 2 devices are the C-Media (RA-40) Hoping to get back to remote site soon and use the commands to find out about the Multi-TT etc. ---
**Author:** ![WA3WCO](https://community.allstarlink.org/user_avatar/community.allstarlink.org/wa3wco/32/3123_2.png) [@WA3WCO](https://community.allstarlink.org/u/WA3WCO)\ **Post date:** [July 14, 2024, 10:55pm UTC](https://community.allstarlink.org/t/usb-hubs/14141/7 "2024-07-14T22:55:46Z")
Can you paste in a copy of the `lsusb` output? ---
**Author:** ![WA3WCO](https://community.allstarlink.org/user_avatar/community.allstarlink.org/wa3wco/32/3123_2.png) [@WA3WCO](https://community.allstarlink.org/u/WA3WCO)\ **Post date:** [July 14, 2024, 11:08pm UTC](https://community.allstarlink.org/t/usb-hubs/14141/8 "2024-07-14T23:08:48Z")
Also, I took a quick peek at a ARK-1123 manual and noticed (on page 43) that the “Advanced” BIOS settings include something called “Legacy USB Support”. I don’t know what choices are available nor their impact to the OS for connected devices but this might be something for you to research. There are other USB references on page 50 and 52. Just things to look at 🙂 ---
**Author:** ![w4bww](https://community.allstarlink.org/user_avatar/community.allstarlink.org/w4bww/32/2102_2.png) [@w4bww](https://community.allstarlink.org/u/w4bww)\ **Post date:** [July 18, 2024, 9:46pm UTC](https://community.allstarlink.org/t/usb-hubs/14141/9 "2024-07-18T21:46:24Z")
![image](https://community.allstarlink.org/uploads/default/original/2X/8/84b91d38da45b203b438bcf11669a621dab66f8d.png) ---
**Author:** ![w4bww](https://community.allstarlink.org/user_avatar/community.allstarlink.org/w4bww/32/2102_2.png) [@w4bww](https://community.allstarlink.org/u/w4bww)\ **Post date:** [July 21, 2024, 3:07pm UTC](https://community.allstarlink.org/t/usb-hubs/14141/10 "2024-07-21T15:07:00Z")
Ill note WA3WCO “Legacy USB Support” is enabled. Ive tried it and a few other of the bios settings. I have to reboot many times also when doing these tests to cycle through root cause. Then I normally try each thing 2-3 times as a human I could be the one making mistakes not the DEV’s. More often than not however its DEV’s that just poor communicators like me. Anyway not figured out the why yet. I have my hub node on the web now though with HTTPS. at [ms.w4bww.net](https://ms.w4bww.net) ---
**Author:** ![WA3WCO](https://community.allstarlink.org/user_avatar/community.allstarlink.org/wa3wco/32/3123_2.png) [@WA3WCO](https://community.allstarlink.org/u/WA3WCO)\ **Post date:** [July 23, 2024, 10:13pm UTC](https://community.allstarlink.org/t/usb-hubs/14141/11 "2024-07-23T22:13:02Z")
> [@w4bww](#): > > Ill note WA3WCO “Legacy USB Support” is enabled. Ive tried it and a few other of the bios settings. I have to reboot many times also when doing these tests to cycle through root cause. Then I normally try each thing 2-3 times as a human I could be the one making mistakes not the DEV’s. More often than not however its DEV’s that just poor communicators like me. Anyway not figured out the why yet. Sorry, I was away for a few days. From your `lsusb` output I see 2 C-Media devices (most likely your RA-40’s). You should be able to use the `asl-find-sound` command to view the “sound” devices and their associated device strings. Are you not able to configure these devices with ASL3? Note: when you use the ASL3 menu (asl-menu) to add a new node to a system we start off with “devstr” not set. The simpleusb and usbradio channel drivers will assign an available sound device when one has not been assigned. Given that you have “2” devices I would suggest that you start off your configuration with only one node, connect only it’s dongle, use the “Interface Tune CLI” to update the settings, and “write” the config (that will include the device string). Then, add the second node, connect it’s dongle, and repeat the configuration steps to get the correct device string set in the configuration.