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