Intel DG41MJ User Manual download pdf (Page 40)

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 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

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 67 68

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Intel DG41MJ User Manual Page 40