# Restart loading USB 1.0 driver?
**URL:** https://forum.psaudio.com/t/restart-loading-usb-1-0-driver/2923
**Category:** DACs
**Created:** [March 25, 2016, 4:57am UTC](https://forum.psaudio.com/t/restart-loading-usb-1-0-driver/2923 "2016-03-25T04:57:24Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@RobH](https://forum.psaudio.com/u/RobH)
#### Post date: [March 25, 2016, 4:57am UTC](https://forum.psaudio.com/t/restart-loading-usb-1-0-driver/2923/1 "2016-03-25T04:57:24Z")
~
I’ve encountered a rather strange issue, lately.
I usually leave my system on 24x7, except when traveling or when thunderstorms are close by. Such has been the case.
Recently, when I restart my (Mojo modified) Mac Mini and try to play via the PS Audio USB output\*, I’ll find that there’s no output at all. When I check the Sound panel on the Mac, it shows the driver as “PS Audio USB Audio **1.0** Output,” instead of PS Audio USB Audio **2.0** Output."
After the required freak-out over not having sound coming out, I can restart the Mini and it loads the correct driver… I think… 'cause I also tend to restart the DS DAC.
This seems to be a recent phenomenon and it’s certainly not a desperate situation (as long as the correct driver keeps loading on restart.) But, can anyone venture a guess as to why this is happening and how to avoid it?
- Sometimes I play from Roon Remote \> Roon Server \> HQPlayer which uses the PS Audio driver. Other times, without Roon I’ll use iTunes/PureMusic using the ChannelD driver.
Thanks!
Rob
---
### Author:  [@RobH](https://forum.psaudio.com/u/RobH)
#### Post date: [March 27, 2016, 4:39am UTC](https://forum.psaudio.com/t/restart-loading-usb-1-0-driver/2923/2 "2016-03-27T04:39:16Z")
Bump…
No thoughts on where this driver might be coming from, or why is sometimes loads at startup?
---
### Author:  [@mrderrick](https://forum.psaudio.com/u/mrderrick)
#### Post date: [March 27, 2016, 10:02am UTC](https://forum.psaudio.com/t/restart-loading-usb-1-0-driver/2923/3 "2016-03-27T10:02:57Z")
The “computer” based file server for source material approach has definitely been a love hate relationship for me.
I can say that all of the glitches that I have encountered are non-DS related.
While our digital audio components seem to just operate flawlessly being powered up 24/7 ( for the most part ), computer related components seem to operate most efficiently when “re-booted” on a regular basis.
I prefer to never power down the DS, but the rest of the system seems to benefit from a “rest” from time to time.
Specifically my Bryston BDP-1 with respect to MPad control working.
I can only guess that some 1’s or 0’s got lost along their way?
Or maybe the Mini needs to boot before the DS is powered up to recognize it correctly?
---
### Author:  [@Elk](https://forum.psaudio.com/u/Elk)
#### Post date: [March 27, 2016, 11:33am UTC](https://forum.psaudio.com/t/restart-loading-usb-1-0-driver/2923/4 "2016-03-27T11:33:59Z")
Given that my Bryston BDP-2 paired with a Windows based interface is rock solid for weeks on end, I suspect the iThing.
---
### Author:  [@RobH](https://forum.psaudio.com/u/RobH)
#### Post date: [March 28, 2016, 3:39am UTC](https://forum.psaudio.com/t/restart-loading-usb-1-0-driver/2923/5 "2016-03-28T03:39:20Z")
Thanks Elk and MrDerrick. I’ll continue to look into it.
---
### Author:  [@Elk](https://forum.psaudio.com/u/Elk)
#### Post date: [March 28, 2016, 1:58pm UTC](https://forum.psaudio.com/t/restart-loading-usb-1-0-driver/2923/6 "2016-03-28T13:58:40Z")
Please let us know what you conclude/learn.