HPE Q8D78A is a dual-port 1Gb Ethernet adapter kit designed specifically for the Nimble Storage CS215 storage array. This refurbished adapter provides two independent 1Gb connections, enabling redundant network connectivity and improved availability for Nimble all-flash and hybrid storage systems. The kit includes necessary mounting hardware and is compatible with CS215 controllers, supporting standard Ethernet protocols for iSCSI and management traffic. Typical applications include mid-market data center environments requiring reliable block storage connectivity with failover capability. Assembly is required during installation. Tested and guaranteed; available via quote.