View the refurbished HP 4GB (1x4GB) Single Rank x4 PC3L-10600R (DDR3-1333) Registered CAS-9 Low Voltage Memory Kit 647893-B21 664688-001 Quickspecs here
HP Original PC3-10600 EEC Regisitered Fully Buffered DDR3-1333 Memory desigined to work in the following HP Proliant Blade, Rack and Tower Servers.