IBM 41Y8278 USB memory key provides persistent storage for VMware ESXi 4 hypervisor installations and configurations. This compact flash-based device connects via standard USB interface and serves as boot media or configuration storage on IBM System x servers. Typical applications include hypervisor deployment, lab environments, and server utility functions where dedicated internal storage is unavailable or undesirable. The 41Y8278 is compatible with IBM xSeries servers supporting ESXi 4 and delivers straightforward plug-and-play functionality without additional drivers or complex setup. Refurbished unit, tested and guaranteed; available via quote.