IMB520 / 521 LGA1151 ATX Motherboard
Board and Pin Assignments
17
2.5.12
SATA 3.0 Connectors (SATA1 ~ SATA4)
These Serial Advanced Technology Attachment (Serial ATA or SATA) connectors are for
SATA 3.0 interface allowing up to 6.0Gb/s data transfer rate. It is a computer bus
interface for connecting to devices such as hard disk drive.
2.5.13
SMBus Header (CN28)
The CN28 (5x1-pin p=2.00mm) is for SMBus (System Management Bus) interface.
2.5.14
Voltage Monitor Header (CN27)
The function of CN27 (8x1-pin p=2.54mm) is for voltage monitoring. It doesn
’t supply
power.
Pin
Signal
1
GND
2
3
SATA_TX-
4
GND
5
SATA_RX-
6
7
GND
Pin
Signal
Pin Signal
1
SMB_SCL
2
N/C
3
GND
4
SMB_SDA
5
+5V
Pin Signal
Pin
Signal
1
GND
2
GND
3
VCC5_SB
4
+3.3V
5
-5V
6
+5V
7
-12V
8
+12V
1
2
3
4
