Intel DG41MJ Product Guide - Page 40

USB 2.0 Headers, Serial Port Header, Table 8. USB 2.0 Header Signal Names

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Intel Desktop Board DG41MJ Product Guide 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 Pin Signal Name Pin 1 Power (+5 V) 2 3 D- 4 5 D+ 6 7 Ground 8 9 Key 10 Note: USB ports may be assigned as needed. USB Port B Signal Name Power (+5 V) DD+ Ground 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. 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 1 DCD 3 TXD# 5 Ground 7 RTS 9 RI Pin Signal Name 2 RXD# 4 DTR 6 DSR 8 CTS 10 No Connection 40

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Intel Desktop Board DG41MJ Product Guide
40
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