Sonnet Technologies Tempo Trio PCI Adapter Combo Card (Mac) - Manual (Page 9)

9
Using FireWire and USB Devices With The Tempo Trio
Known Issues and Advice
FireWire and USB interfaces have many technological advantages over older
interfaces such as ADB and SCSI, not the least of which is hot-plugging capa-
bility. However, there are some limitations you should be aware of, and some
advice we have listed here. Refer to the peripheral manufacturers’ web sites and
user’s guides for more specifi c information.
• While USB keyboards and mice are compatible with Tempo Trio, certain
functions cannot be supported on pre-G3 machines; this is an Apple ROM
issue and not a problem with the Sonnet Tempo Trio. Because pre-G3
Macintosh computers were built before Apple added onboard USB support,
certain features, including keyboard startup, wake from sleep (by pressing a
key or moving the mouse), and others, will not work. We recommend that
you keep an ADB keyboard and mouse connected to your system to support
such functionality.
• Many peripherals require additional drivers and application software to
operate or have full functionality. Software should be included with the
device, or available to download from the manufacturer’s web site. Check the
peripheral’s user’s manual for information about necessary software.
• Disconnecting USB or FireWire peripherals (including external storage devic-
es, cameras, memory card readers, printers, etc.) while they are transferring or
receiving data, may result in damage to the fi le(s) being transferred or cause
your system to hang.
• Always unmount a drive from the desktop before disconnecting it from its
cable or the Tempo Trio card.
• Do not forget to connect external power supplies to the peripherals that
require them. Although many peripherals may draw power directly from the
Tempo Trio card, other devices require an external power source.
• When a USB 2.0 peripheral is connected to a USB 1.1 peripheral, which is in
turn connected directly to the Tempo Trio, the USB 2.0 peripheral will oper-
ate at USB 1.1 speeds. Keep USB 2.0 and USB 1.1 devices connected separately.
• Should you need to connect USB 2.0 peripherals to a hub, be sure to use a
USB 2.0 hub; USB 2.0 peripherals connected to a standard USB hub will oper-
ate at USB 1.1 speed.
• When the Tempo Trio is installed in a pre-G3 Macintosh computer, connect-
ed FireWire drives cannot be used as the system startup (boot) drive.
• When transferring data from a digital video camera using a FireWire port on
the Tempo Trio, we do not recommend using another FireWire device at the
same time.
• Do not connect FireWire devices in a loop, nor terminate a FireWire chain;
there are no terminators or ID settings required for any FireWire device.