To add more details, I'm using an X10DRC-LN4+ (X10DRC-LN4+ | Motherboards | Products | Super Micro Computer, Inc.) with the built-in 3108 controller. On the product page, it states:
Broadcom 3108 SAS3 (12Gbps) controller; HW RAID 0, 1, 5, 6, 10, 50, 60
2GB Cache with optional SuperCap backup...