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SATA3~SATA4: Serial ATA 2.0 Connectors
These connectors connect to SATA hard disk drives via SATA cables. It satisfies
the SATA 2.0 specification and with transfer rate of 3.0Gb/s.
F_USB1/2: Header for USB 2.0 Ports at Front Panel
This header allows user to add additional USB ports on the PC front panel, and
also can be connected with a wide range of external peripherals.
J_COM: Serial Port Header
The motherboard has a serial port header for connecting RS-232 Port.
H81MLC/H81MHC/H81MDC/H81MGC
Pin
1
2
3
4
5
6
7
Pin
Assignment
1
+5V (fused)
2
+5V (fused)
3
USB-
4
USB-
5
USB+
6
USB+
7
Ground
8
Ground
9
NC
10
Key
Pin
Assignment
1
Carrier detect
2
Received data
3
Transmitted data
4
Data terminal ready
5
Signal ground
6
Data set ready
7
Request to send
8
Clear to send
9
Ring indicator
10
NC
Assignment
Ground
TX+
TX-
Ground
RX-
RX+
Ground
15
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