@GoodEnoughGear I've searched around a bunch on device manager, sound devices, usb, blah blah. I don't think the culprit is in there, I suspect it's something buried in a power setting. I found it once on another machine, I think I had to edit something in a registry somewhere to even make the option show up. I just need to find it again. I will admit that turning off all the sleep settings that I can find does significantly reduce the blue screens. @Psalmanazar I think the Ultralite Mk4 is newer than the AVB? I've just had the avb sitting in my wishlist on amazon for a while, but yeah that's not bus powered. I haven't even heard of the SSL stuff... looks like they just came out? looking a little bit chunky size-wise though.