Installing and Replacing Desktop Board Components
47
Front Panel USB 2.0 Headers
Figure 19, C and I show the location of the front panel USB 2.0 headers and Table 7
shows the pin assignments and signal names.
Table 7. Front Panel USB 2.0 Headers Signal Names
Pin Signal Name Pin Signal Name
1 Power (+5 V) 2 Power (+5 V)
3 D- 4 D-
5 D+ 6 D+
7 Ground 8 Ground
9 Key 10 No Connection
NOTE
Computer systems that have an unshielded cable attached to a USB port might not
meet FCC Class B requirements, even if no device or a low-speed USB device is
attached to the cable. Use a shielded cable that meets the requirements for a
full-speed USB device.
Chassis Intrusion Header
Figure 19, D shows the location of the chassis intrusion header. This header can be
connected to a mechanical switch on the chassis to detect if the chassis cover is
removed. This switch should be in the open position when the chassis cover is
installed and closed when the cover is removed.
Table 8 shows the pin assignments and
signal names for the chassis intrusion header.
Table 8. Chassis Intrusion Header Signal Names
Pin Description
1 Intruder#
2 Ground
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