Dell RXGPP-RFB is a refurbished 8 GB memory module for expanding or replacing system memory. It is a single DIMM rated at 2133 MHz.
Dell's PowerEdge R340 technical guide identifies the underlying RXGPP module as an 8 GB, 2133 UDIMM with one rank and x8 data width. It lists 1.2 V operation and Advanced ECC support for that module, and includes RXGPP in the R340 memory offering. System memory speed and compatibility depend on the computer's supported configuration.