Intel DQ45EK Product Guide - Page 45
USB 2.0 Headers, Serial Port Header, Table 9. USB 2.0 Header Signal Names
UPC - 735858200325
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Installing and Replacing Desktop Board Components USB 2.0 Headers See Figure 18, C for the location of the two USB 2.0 headers. Table 9 shows the pin assignments for each USB 2.0 header. Each USB header can be used to connect two USB devices. Table 9. 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 for the location of the serial port header. Table 10 shows the pin assignments for the header. Table 10. 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 45