user manual | page 0
Troubleshooting
Is the drive connected to a USB 2.0
port on your computer?
Check to see that the USB 2.0 drivers
for your Host USB 2.0 port and for
your USB 2.0 device have been cor-
rectly installed (see the 4.2.1 What Is
USB 2.0? section for a more detailed
discussion). If in doubt, uninstall the
driver and then reinstall it.
Does your computer or operating sys-
tem support USB 2.0?
See the 4.2.1 What Is USB 2.0? section
for a more detailed discussion.
teCH note:
Your LaCie mini HUB Hard Drive is equipped with a self-powered Hub. Technically, you can
connect up to 127 devices to a single USB bus. The hub, which you hook up directly to a USB connector on
your computer, usually has 4 output connections enabling you to connect the same number of peripherals.
One of the hub’s main functions is to regenerate signals that lose part of their strength as they are transmit-
ted via the USB cable. By connecting yet another hub to a connector on the existing hub, you can then plug
in a new set of peripherals and so on, up to a maximum of 127.
You can use your USB 2.0 devices with USB 1.1 hubs, but the peripherals will be limited to USB 1.1 perfor-
mance levels. As USB 2.0 is backwards compatible, you will be able to connect USB 1.1 devices to USB 2.0
hubs;
however, the USB 1.1 devices will still maintain their normal performance levels (i.e. 12 Mb/s).
In practice, users who desire enhanced USB 2.0 throughput will need to connect their USB 2.0 hardware on
both ends of a 2.0 hub to achieve the “high-speed” mode. On one end, a USB 2.0 compliant host controller
resides on the host PC to manage the enumeration process and power management. On the other end, USB
2.0 hardware must be connected directly to the root hub or through a USB 2.0 hub.
Important note:
Avoid using USB connectors found on certain peripherals such as keyboards. These are
passive (or pass-through) connectors that lead to power loss and unstable operation.
Important note:
Only use USB cables shorter than 5 meters (approximately 15 feet). Using longer
cables cause the peripherals to malfunction due to excessive reduction in electrical signal strength.
