Description:HP Smart Array P204i-b SR Gen104 Internal Lanes/1GB Cache12Gb/s SAS Modular ControllerPart Number(s) Spare Part# 804370-001 Overview: The HP Smart Array P204i-b SR Gen10 Controller - supporting 12 Gb/s SAS and PCIe 3.0 - provides enterprise-class storage performance - reliability - security and efficiency needed to address your evolving data storage needs. This controller has four internal SAS lanes - allowing connection to SAS or SATA drives - supports Mixed Mode operations of RAID and HBA simultaneously - and offers encryption for data-at rest on any drive. Specifications: CategoryProliant Controller Sub-CategorySmart Array GenerationP204i-b Part Number804370-001 Products ID739878 ManufacturerHP Product TypeStorage Controller (RAID) InterfacePCI Express 3.0 x8 Lane Width Connector Type8 Internal SAS lanes Form FactorType-b Modular Controller PortsInternal 4 SAS lanes across 1 x4 Port Cache1GB Flash-Backed Write Cache Transfer Rate12Gb/s SAS per lane/6Gb/s SATA per lane RAID Level0 1 5 6 10 1 ADM