Asus RS720-E7/RS12 - Manual (Page 61)

ASUS RS720-E7/RS12; RS720-E7/RS12-E 4-9
4. USB connectors (10-1 pin USB34, USB56; A-Type USB10)
These connectors are for USB 2.0 ports. Connect the USB module cables to
connectors USB34 and USB56, then install the modules to a slot opening at
the back of the system chassis. These USB connectors comply with USB 2.0
specification that supports up to 480 Mbps connection speed.
3. PSAS connectors (7-pin PSAS1–8 [Light Blue])
Supported by the ASUS ® PIKE Card, these connectors are for the SAS signal
cables for SAS hard disk drives that allows up to 6Gb/s of data transfer rate.
If you installed SAS hard disk drives, you can create a RAID 0, RAID 1, RAID
10, or RAID 5 configuration.
The actual data transfer rate depends on the speed of SAS hard disks installed.