User`s guide

Chapter 2: About SATA/SAS Controllers l13
About the Adaptec SATA/SAS 1405 Controller
The Adaptec SATA/SAS 1405 controller is a low-profile PCIe controller with these features:
Form factor Low-profile
Bus compatibility PCIe
PCIe bus width x4
PCIe bus speed 2.5 Gbps
Phys 4
Connectors, internal 1 mini-SAS x4 (SFF-8087)
Simple volume Yes
Disk drives SAS (3.0 Gbps), SATA I (1.5 Gbps),
SATA II (3.0 Gbps)
Maximum number of devices 4 direct-attached devices or up to
128 using expander technology
Enclosure management support
I2C
and SGPIO
Native Command Queuing (NCQ) Yes