Philips JR12CDRWK/00 User Manual page 34

3.8 Interfaces
Interfaces are used for connecting peripheral devices to your computer. Check the technical
specifications of your computer and of the product you bought for availability of these interfaces.
Overview
interface
USB 1.1
(max. speed 4x4x6)
USB 2.0
IEEE 1394
General
Connecting
Both USB and FireWire support 'hot-plugging' which means that you do not have to switch off the
computer before making the connection. And that you do not have to restart Windows every time you
connect a new device. The controller driver will detect the external drive as new hardware. It can be
used within a few seconds without the need to restart the computer.
Disconnecting
The computer may crash if you unplug the drive while it is actively providing a data stream to an
application on your computer. To avoid problems, first close all applications that use data from the
drive and only then unplug your external drive. Do not unplug the drive while writing to a disc, this may
render your disc useless. Some operating systems support a disconnect feature through an icon in the
system tray, e.g.
Bandwidth restrictions
As the drive is an external device, it shares the bandwidth of the controller port with all other
peripherals connected to that controller. If these devices are active (video data transfer, speakers
providing sound, scanners performing a scan), the remaining bandwidth may be restricted to
read/write speeds lower than those listed in the 'Technical specifications' as the maximum speed for
that port.
USB 1.1
Compatibility
USB 1.1 devices may be connected to USB 2.0 adapters or hubs, but will run at USB 1.1 speeds only.
USB 2.0
Hi-Speed compatibility
USB 2.0 devices may fall back to USB 1.1 speeds if not all USB 2.0 system requirements are met. If
this is being done without notifying the user, then the limited transfer speeds may be the only
alias
lo-speed USB
full-speed USB
hi-speed USB
FireWire; iLink
. If available, always use this disconnect option before unplugging the drive.
or
or
connection speed
1,5 Mbps
12 Mbps
480 Mbps
400 Mbps
compatible with
itself only
itself and USB 1.1
itself only