Panasonic fx7 has USB v1.1 only, spec ( per owner's manual..

Sandra www.sisoftware.co.uk/sandra/ can detect & report USB
version # & data packet size ( 64 byte is fstr than 8 byte ), e.g.
==========================================
< Root Hub: USB Port 1 >
Status: Device Connected
Device Connected to Port: USB Mass Storage Device
OEM Device Name: Panasonic (Matsushita) ??? (2372)
Device Version: 0.10
Device ID: VEN_04DA, DEV_2372, PRT_00
USB Version: 1.10
Speed: Full (12Mbps)
Configuration Settings: 1
Open Pipes: 2
Transfer Type: Bulk
Data Packet Size: 8 bytes

< Root Hub: USB Port 2 >
Status: Device Connected
Device Connected to Port: USB Mass Storage Device
OEM Device Name: Alcor Micro Corp. ??? (6369)
Device Version: 1.19
Device ID: VEN_058F, DEV_6369, PRT_00
USB Version: 2.00
Speed: Full (12Mbps)
Configuration Settings: 1
Open Pipes: 2
Transfer Type: Bulk
Data Packet Size: 64 bytes
==========================================
Owners can sue for replacements.