Hi. I added lines to alsa-kernel/usb/usbquirks.h: /* Zoom R16*/ { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, .idVendor = 0x1686, .idProduct = 0x00dd, .bInterfaceClass = USB_CLASS_AUDIO, }, Compiled, and installed modules. Now when I plug the R16 in, dmesg shows: [ 131.682282] usb 1-6: new high speed USB device using ehci_hcd and address 4 [ 131.804188] usb 1-6: config 1 interface 3 altsetting 0 bulk endpoint 0x1 has invalid maxpacket 64 [ 131.804197] usb 1-6: config 1 interface 3 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 64 [ 131.805397] usb 1-6: configuration #1 chosen from 1 choice [ 132.889369] ALSA usbaudio.c:1293: 4:2:1: cannot get freq at ep 0x84 [ 137.890930] usbcore: registered new interface driver snd-usb-audio [ 139.013422] ALSA usbaudio.c:1293: 4:1:1: cannot get freq at ep 0x3 -Jani -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html