Serial Port Header; Front Panel Audio Header For Intel Hd Audio; Front Panel Audio Header For Ac '97 Audio; Front Panel Usb 2.0 Headers - Intel DB75EN Specification

2.2.2.1 Signal Tables for the Connectors and Headers
Table 13. 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)
Table 14. Front Panel Audio Header for Intel HD Audio
Pin Signal Name
1 [Port 1] Left channel
3 [Port 1] Right channel
5 [Port 2] Right channel
7 SENSE_SEND (Jack detection)
9 [Port 2] Left channel
Table 15. Front Panel Audio Header for AC '97 Audio
Pin Signal Name
1 MIC
3 MIC_BIAS
5 FP_OUT_R
7 AUD_5V
9 FP_OUT_L
Table 16. Front Panel USB 2.0 Headers
Pin Signal Name
1 +5 V DC
3 D-
5 D+
7 Ground
9 KEY (no pin)
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)
Pin Signal Name
2 Ground
4 PRESENCE# (Dongle present)
6 [Port 1] SENSE_RETURN
8 Key (no pin)
10 [Port 2] SENSE_RETURN
Pin Signal Name
2 AUD_GND
4 AUD_GND
6 FP_RETURN_R
8 KEY (no pin)
10 FP_RETURN_L
Pin Signal Name
2 +5 V DC
4 D-
6 D+
8 Ground
10 No Connect
Technical Reference
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