Fujitsu S26361-F4026-L216-RFB is a server memory module for adding RAM to a compatible system. It provides 16 GB in one module, giving a single-module memory configuration.
The module uses DDR4 memory rated at 2666 MHz and has a 288-pin DIMM form factor. ECC support enables memory error detection and correction, a function intended for server memory configurations.
This is a straightforward upgrade option for a server that supports this memory type and module format.