The Lenovo 4X70F28592 is an 8GB SD card designed for ThinkServer systems, providing expandable flash storage for server configurations. This refurbished card integrates directly into ThinkServer platforms for diagnostic, firmware, or OS boot applications. The 8GB capacity supports typical server management tasks and can serve as a dedicated boot device in select ThinkServer models. Compatibility is limited to Lenovo ThinkServer systems equipped with SD card slots. This card is standard for server deployments requiring non-volatile storage independent of primary arrays. Tested and guaranteed; available via quote.