Intel DX48BT2 USB 2.0 Headers, Ieee 1394a Header Signal Names, USB 2.0 Header Signal Names

Installing and Replacing Desktop Board Components

IEEE 1394a Header

Figure 27, F shows the location of the IEEE 1394a header. Table 9 shows the pin assignments and signal names for the IEEE 1394a header.

Table 9. IEEE 1394a Header Signal Names

Pin	Signal Name
1	TPA1+
3	Ground
5	TPA2+
7	+12 V
9	Key (no pin)

Pin	Signal Name
2	TPA1-
4	Ground
6	TPA2-

8+12 V

10Ground

USB 2.0 Headers

Figure 27, G shows the location of the USB 2.0 headers. Table 10 shows the pin assignments and signal names for each USB 2.0 header. Each USB header can be used to connect two USB devices.

Table 10. 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.

51