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Intel Desktop Board DG33TL Product Guide
Connecting to the Front Panel Header
Before connecting to the front panel header, observe the precautions in "Before You
Begin" on page 27. See Figure 23, E on page 48 for the location of the multi-colored
front panel header.
Table 13 shows the pin assignments for the front panel header.
Table 13. Front Panel Header
Pin
Description
Hard Drive Activity LED
1
Hard disk LED pull-up to +5 V Out
3
Hard disk active LED
Reset Switch
5
Ground
7
Reset switch
9
Power
Connecting to the USB 2.0 Headers
Before connecting to the USB 2.0 headers, observe the precautions in "Before You
Begin" on page 27. See Figure 23, G on page 48 for the location of the three USB 2.0
headers. Table 14 shows the pin assignments for each USB 2.0 header. Each USB
header can be used to connect two USB devices.
Table 14. USB 2.0 Header Signal Names
Pin
Signal Name
1
Power (+5 V)
3
D-
5
D+
7
Ground
9
Key
Note: USB ports may be assigned as needed.
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.
52
In/Out Pin
Out
In
Power
Out
USB Port A
Description
Power LED
2
Front panel green LED
4
Front panel yellow LED
On/Off Switch
6
Power switch
8
Ground
Not Connected
10
No pin
USB Port B
Pin
Signal Name
2
Power (+5 V)
4
D-
6
D+
8
Ground
10
No Connection
In/Out
Out
Out
In
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