Sony VGP-UHDP04 - Manual (Page 21)

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Symptom Cause/Remedy
The hard disk drive is
not recognized by the
computer (The icon of
the hard disk drive
does not appear in
[My Computer].), or
does not work
properly.
Data transfer rate is
low.
c If the computer returns from hibernation to normal
operating mode or turns on while the hard disk drive is
connecting, the computer may not recognize the hard disk
drive correctly.
In this case, disconnect the USB cable from the hard disk
drive and reconnect it.
c The hard disk drive may not be connected correctly to the
computer with an USB cable. See “Connecting the hard
disk drive” (page 8).
c The operating system is not Windows 2000 or Windows XP.
c USB is designed to support connection of more than one
peripheral equipment working simultaneously, however,
some combinations of peripheral equipment can cause
unstable operation. Turn off all peripheral equipment,
disconnect all unnecessary devices, check the cable
connections, and then turn the power back on.
c To reset the USB interface, shut down your Windows
operating system, turn the computer off, and disconnect the
USB cable.
c The hard disk drive may be locked. For details, see "Using
the hard disk drive (secure mode)" (page 14).
c The power management function of the computer may be
active. For details, refer to the manuals provided with your
computer.
c The transfer rate varies according to the workload of the
computer.
c If you connect the computer corresponding to USB1.1, the
data transfer rate will be about 1/40 compared to the
computer corresponding to USB2.0.
Troubleshooting
If a problem occurs during operation of the unit, refer to the information
provided in this section. If the problem persists, consult your nearest Sony
dealer. For contact information, see “Getting Help” (page 18). Also refer to
the manuals provided with your computer.