[  342.890258] usb 2-1: USB disconnect, device number 4
[  683.040057] usb 2-1: new high-speed USB device number 5 using ehci_hcd
[  683.174780] scsi7 : usb-storage 2-1:1.0
[  684.174824] scsi 7:0:0:0: CD-ROM            ZCOption Icon CD          1.00 PQ: 0 ANSI: 4
(...)

[  684.620046] usb 2-1: new high-speed USB device number 6 using ehci_hcd
[  684.753135] usb 2-1: config 1 interface 0 altsetting 0 bulk endpoint 0x81 has invalid maxpacket 64
[  684.753146] usb 2-1: config 1 interface 1 altsetting 0 bulk endpoint 0x82 has invalid maxpacket 64
[  684.753157] usb 2-1: config 1 interface 4 altsetting 0 bulk endpoint 0x86 has invalid maxpacket 64
[ 1039.723537] cfg80211: Found new beacon on frequency: 2467 MHz (Ch 12) on phy0
[ 3992.958880] usb 2-1: USB disconnect, device number 6
[ 4002.544077] usb 2-1: new high-speed USB device number 7 using ehci_hcd
[ 4002.678530] scsi8 : usb-storage 2-1:1.0
[ 4003.678442] scsi 8:0:0:0: CD-ROM            ZCOption Icon CD          1.00 PQ: 0 ANSI: 4