Intel DH55HC Product Guide - Page 51

Serial Header, Table 14. Front Panel USB Header with Intel Z-U130 USB Solid-State Drive

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Installing and Replacing Desktop Board Components Figure 23, J shows the location of the front panel USB 2.0 header (with Intel Z-U130 USB Solid-State Drive (or Compatible Device) Support) and Table 14 shows its pin assignments and signal names. Table 14. Front Panel USB Header (with Intel Z-U130 USB Solid-State Drive (or Compatible Device) Support) Signal Names Pin Signal Name 1 +5 VDC 3 D- 5 D+ 7 Ground 9 KEY (no pin) Pin Signal Name 2 +5 VDC 4 D- 6 D+ 8 Ground 10 LED# 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 Header Figure 23, K shows the location of the serial header. Table 15 shows the pin assignments and signal names for the serial header. Table 15. Serial Port Header Pin Signal Name 1 DCD (Data Carrier Detect) 3 TXD# (Transmit Data) 5 Ground 7 RTS (Request To Send) 9 RI (Ring Indicator) Pin Signal Name 2 RXD# (Receive Data) 4 DTR (Data Terminal Ready) 6 DSR (Data Set Ready) 8 CTS (Clear To Send) 10 Key (no pin) 51

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Installing and Replacing Desktop Board Components
51
Figure 23, J shows the location of the front panel USB 2.0 header (with Intel Z-U130
USB Solid-State Drive (or Compatible Device) Support) and Table 14 shows its pin
assignments and signal names.
Table 14. Front Panel USB Header (with Intel Z-U130 USB Solid-State Drive
(or Compatible Device) Support) Signal Names
Pin
Signal Name
Pin
Signal Name
1
+5 VDC
2
+5 VDC
3
D-
4
D-
5
D+
6
D+
7
Ground
8
Ground
9
KEY (no pin)
10
LED#
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 Header
Figure 23, K shows the location of the serial header.
Table 15 shows the pin
assignments and signal names for the serial header.
Table 15. Serial Port Header
Pin
Signal Name
Pin
Signal Name
1
DCD (Data Carrier Detect)
2
RXD# (Receive Data)
3
TXD# (Transmit Data)
4
DTR (Data Terminal Ready)
5
Ground
6
DSR (Data Set Ready)
7
RTS (Request To Send)
8
CTS (Clear To Send)
9
RI (Ring Indicator)
10
Key (no pin)