The ConnectPort X4 supports USB flash drives with a FAT 32 formatted file system.
To check flash drive information on the ConnectPort X4, telnet to the unit, login as root and issue the "flashdrv" command. The following is an example with 2 USB flash drives (one 2MB and one 4MB):
Volume Bytes Used Available Bad Use% Mounted on
FLASH_USB 4002.94 MB 2414.24 MB 1588.69 MB 0.00 MB 60 A:/
DISK_IMG 2102.39 MB 857.40 MB 1244.98 MB 0.00 MB 40 B:/
We recommend avoiding any flash drives with built-in compression or which look like 2 drives.