The RR 3742A is an 8x internal and 8x external channel 12Gb/s PCIe 3.0 x8 SAS/SATA RAID controller.
 
RR3742A Key Features
PCIe 3.0 x8 Interface
8x Internal & 8x External SAS 12 Gb/s / SATA 6 Gb/s Ports
RAID 0, 1, 5, 6, 10, 50, and JBOD
2x SFF-8643 & 2x SFF-8644 Mini-SAS Ports
Low-Profile Form Factor
Supports up to 16 Drives
Mac, Windows, & Linux Compatible
 
RocketRAID 3700 series host bus adapters are the world’s most price competitive 12G SAS/SATA RAID controllers, and deliver unprecedented end-to-end Generation 3.0 PCI Express transfer performance with Professional class RAID Storage reliability and management capabilities.