Hardware Reference
In-Depth Information
Table 4.41 IEEE 1394 (FireWire/i.LINK) Connector Pinout
Note that the FireWire header connector has the same physical configuration and keying
as a USB connector. This is unfortunate because it enables a USB front panel cable to be
pluggedintoaFireWireconnector,andviceversa.Eithersituationcouldcauseashortcir-
cuit.
Caution
You must not plug a USB cable into a FireWire header connector or a FireWire cable into
a USB header connector. Doing so causes a short circuit that can damage the motherboard,
as well as any peripherals you plug into the front panel connectors. Higher-quality mother-
boards usually have self-healing fuses on the power signals, which can prevent damage if
such a situation occurs.
Motherboards that have integrated audio hardware usually feature a front panel audio
header connector. The pinout of the industry-standard front panel audio header connector
is shown in
Figure 4.36
and
Table 4.42
.
Figure 4.36
Front panel audio header connector configuration.
