Module Name: PC4-21300V-R Speed: 2666 MHz Data Integrity Check: ECC Kit Storage Capacity: 64GB (4x16GB) Condition: Fully Tested, Refurbished Warranty: 1 Year Warranty Compatible with: Rackmounts: C4130 C6320 R430 R530 R630 R730 R730xd XL R630 XL R730 XL R7910 R440 R540 R640 R740 R840 R940 R740xd C6420  Towers: T430 T630 T440 T640 T7910  Blades: FC830 M830 M630 FC630 M640 FC640 FC430