The 4350 HBAs have the following features and specifications:

   PCIe 3.0 x8 host interface
   12 Gbps SAS/SATA host bus adapter, based on the Adaptec HBA 1100-8i and 1100-16i
   PCI low profile, half-length form factor
   8 or 16 internal 12 Gbps SAS/SATA ports
       4350-8i support connectivity to 8 internal drives
       4350-16i support connectivity to 16 internal drives
   Up to 12 Gbps throughput per port
       Supports 12, 6, or 3 Gbps SAS speeds
       Supports 6 or 3 Gbps SATA speeds
   Two internal x4 HD Mini-SAS connectors (SFF-8643)
   Non-RAID (JBOD mode, known as “raw” or "HBA mode” in Adaptec parlance) support for SAS and SATA HDDs and SSDs (RAID not supported)
   Optimized for SSD performance
   High performance architecture with a queue depth of up to 1014
   Advanced power management support
   Supports 512e, 512n and 4K sector formatted drives
   TLR
   SATA Native Command Queuing (NCQ)
   S.M.A.R.T. support.





LenovoPress - https://lenovopress.com/lp1439-thinksystem-4350-16i-and-4350-8i-internal-sas-hbas