Part No: 44E4357 - IBM 4-Ports 2.5-inch SAS / SATA Backplane for x3850 M2

Function: A RAID controller for SAS and SATA drives, designed to enhance storage performance and redundancy.
Zero-Channel RAID: Operates without a dedicated RAID processor, relying on the host CPU.
PCIe Interface: Connects to the server through a PCI Express slot.
RAID Support: Provides RAID capabilities for data protection, including RAID 0, 1, 5, 10.
Compatibility: Compatible with various IBM server systems.
Model Number: 43W4282.