Asus P8B-C/4L User Manual page 52

2. SAS connectors (7-pin SAS1–4 [Blue]; 7-pin SAS5–8 [Black];
P8B-C/SAS/2L, P8B-C/SAS/4L only )
This motherboard comes with eight (8) Serial Attached SCSI (SAS) connectors,
the next-generation storage technology that supports both Serial Attached
SCSI (SAS) and Serial ATA (SATA). Each connector supports one device.
3. Hard disk activity LED connector (4-pin HDLED1)
This LED connector is for the storage add-on card cable connected to
the SATA or SAS add-on card. The read or write activities of any device
connected to the SATA or SAS add-on card causes the front panel LED to
light up.
2-34 Chapter 2: Hardware information