Usb 2.0 headers, Serial port header – Intel DG41MJ User Manual
Page 40
Intel Desktop Board DG41MJ Product Guide
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USB 2.0 Headers
Before connecting to the USB 2.0 headers, observe the precautions in "Before You
Begin" on page 23. See Figure 18, C on page 38 for the location of the USB 2.0
headers. Table 8 shows the pin assignments for each USB 2.0 header. Each USB
header can be used to connect two USB devices.
Table 8. USB 2.0 Header Signal Names
USB Port A
USB Port B
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: 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.
Serial Port Header
See Figure 18, D on page 38 for the location of the serial port header. Table 9 shows
the pin assignments for the serial port header.
Table 9. Serial Port Header Signal Names
Pin Signal
Name
Pin Signal
Name
1 DCD
2 RXD#
3 TXD#
4 DTR
5 Ground
6 DSR
7 RTS
8 CTS
9 RI
10
No
Connection