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 25. See Figure 23, E on page 46 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

In/Out

Pin

Description

In/Out

 

 

 

 

 

 

 

Hard Drive Activity LED

 

 

Power LED

 

 

 

 

 

 

 

1

Hard disk LED pull-up to +5 V

Out

2

Front panel green LED

Out

 

 

 

 

 

 

3

Hard disk active LED

Out

4

Front panel yellow LED

Out

 

 

 

 

 

 

 

Reset Switch

 

 

On/Off Switch

 

 

 

 

 

 

 

5

Ground

 

6

Power switch

In

 

 

 

 

 

 

7

Reset switch

In

8

Ground

 

 

Power

 

 

Not Connected

 

 

 

 

 

 

 

9

Power

Out

10

No pin

 

 

 

 

 

 

 

Connecting to the USB 2.0 Headers

Before connecting to the USB 2.0 headers, observe the precautions in "Before You Begin" on page 25. See Figure 23, G on page 46 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

 

USB Port A

 

 

Pin

Signal Name

1

Power (+5 V)

3

D-

5

D+

7Ground

9Key

 

USB Port B

Pin

Signal Name

2

Power (+5 V)

4

D-

6

D+

8

Ground

10

No Connection

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.

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Intel DG33TL manual Connecting to the Front Panel Header, Connecting to the USB 2.0 Headers, USB 2.0 Header Signal Names