Oui, pardon, vu l’heure où j’ai posté j’en ai oublié les infos. Dsl.
Merci du rappel 
S’il faut d’autres infos n’hésitez pas à m’indiquer lesquelles 
Les résultats de dmesg pour chacun des 3 périphs en cause sur le même port usb2, l’un à la suite de l’autre.
Pour la clé usb :
[quote][64026.254347] usb 3-1.1: USB disconnect, device number 7
[64036.440193] usb 3-1.1: new high-speed USB device number 8 using ehci-pci
[64036.538534] usb 3-1.1: New USB device found, idVendor=18a5, idProduct=0302
[64036.538539] usb 3-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[64036.538541] usb 3-1.1: Product: STORE N GO
[64036.538543] usb 3-1.1: Manufacturer: Verbatim
[64036.538544] usb 3-1.1: SerialNumber: 07B11409EFF7E2D8
[64036.538979] usb-storage 3-1.1:1.0: USB Mass Storage device detected
[64036.544320] scsi7 : usb-storage 3-1.1:1.0
[64037.575466] scsi 7:0:0:0: Direct-Access Verbatim STORE N GO 5.00 PQ: 0 ANSI: 0 CCS
[64037.576250] sd 7:0:0:0: Attached scsi generic sg2 type 0
[64038.614800] sd 7:0:0:0: [sdb] 15646720 512-byte logical blocks: (8.01 GB/7.46 GiB)
[64038.616275] sd 7:0:0:0: [sdb] Write Protect is off
[64038.616280] sd 7:0:0:0: [sdb] Mode Sense: 23 00 00 00
[64038.617920] sd 7:0:0:0: [sdb] No Caching mode page found
[64038.617924] sd 7:0:0:0: [sdb] Assuming drive cache: write through
[64038.645348] sdb: sdb1
[64038.650303] sd 7:0:0:0: [sdb] Attached SCSI removable disk
[64039.060578] FAT-fs (sdb1): utf8 is not a recommended IO charset for FAT filesystems, filesystem will be case sensitive!
[64039.107925] FAT-fs (sdb1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.[/quote]
Pour le ZTE FF OS :
[quote][63885.376578] usb 3-1.1: USB disconnect, device number 6
[63903.760082] usb 3-1.1: new high-speed USB device number 7 using ehci-pci
[63903.853434] usb 3-1.1: New USB device found, idVendor=19d2, idProduct=1350
[63903.853439] usb 3-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[63903.853441] usb 3-1.1: Product: Android
[63903.853443] usb 3-1.1: Manufacturer: Android
[63903.853445] usb 3-1.1: SerialNumber: 1a14cc4
[63903.860375] usb-storage 3-1.1:1.3: USB Mass Storage device detected
[63903.860510] scsi6 : usb-storage 3-1.1:1.3
[63904.861121] scsi 6:0:0:0: Direct-Access Linux File-CD Gadget 0000 PQ: 0 ANSI: 2
[63904.861722] scsi 6:0:0:1: Direct-Access Linux File-CD Gadget 0000 PQ: 0 ANSI: 2
[63904.862500] sd 6:0:0:0: Attached scsi generic sg2 type 0
[63904.863129] sd 6:0:0:1: Attached scsi generic sg3 type 0
[63904.879234] sd 6:0:0:0: [sdb] Attached SCSI removable disk
[63904.879851] sd 6:0:0:1: [sdc] Attached SCSI removable disk
[63937.836786] sd 6:0:0:1: [sdc] 1867743 512-byte logical blocks: (956 MB/911 MiB)
[63937.851147] sdc:
[63938.860978] sd 6:0:0:0: [sdb] 7733248 512-byte logical blocks: (3.95 GB/3.68 GiB)
[63939.052399] sdb:[/quote]
Pour la souris logitech :
[quote][63655.361691] usb 3-1.1: USB disconnect, device number 3
[63658.634361] usb 3-1.1: new low-speed USB device number 6 using ehci-pci
[63658.733653] usb 3-1.1: New USB device found, idVendor=046d, idProduct=c521
[63658.733657] usb 3-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[63658.733660] usb 3-1.1: Product: USB Receiver
[63658.733662] usb 3-1.1: Manufacturer: Logitech
[63658.739337] input: Logitech USB Receiver as /devices/pci0000:00/0000:00:1d.0/usb3/3-1/3-1.1/3-1.1:1.0/0003:046D:C521.0004/input/input23
[63658.739766] hid-generic 0003:046D:C521.0004: input,hidraw0: USB HID v1.11 Mouse [Logitech USB Receiver] on usb-0000:00:1d.0-1.1/input0
[63658.747070] input: Logitech USB Receiver as /devices/pci0000:00/0000:00:1d.0/usb3/3-1/3-1.1/3-1.1:1.1/0003:046D:C521.0005/input/input24
[63658.747386] hid-generic 0003:046D:C521.0005: input,hiddev0,hidraw1: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:1d.0-1.1/input1
[/quote]