This is a genuine Cisco 1U Modular RAID Controller PCIe Riser Card Assembly (P/N: 1U-MRAID-RISER). This riser is the specific component required to install a Cisco 12G SAS Modular RAID controller into a Cisco UCS C220 M4 or C240 M4 rack server. As an authentic Cisco part, it provides the dedicated slot and connectivity for the modular controller, enabling enterprise-grade storage solutions while saving standard PCIe slots for other hardware. Key Features Genuine Cisco Part: Ensures perfect fit, function, and compatibility within the Cisco UCS C220 M4 and C240 M4 server chassis. Enables Modular RAID: The specific riser card needed to house and connect a Cisco 12G SAS Modular RAID controller to the system board. Designed for UCS C-Series: Engineered exclusively for the Cisco UCS C220 M4 and C240 M4 1U/2U rack servers. Space-Saving Design: By using a dedicated modular slot, this riser allows you to add a powerful hardware RAID controller without occupying a valuable, full-size PCIe slot.