Product Details Module Name: PC4-23400 Speed: 2933 MHz Data Integrity Check: ECC Kit Storage Capacity: 256GB Condition: Fully Tested, Refurbished Warranty: 1 Year Warranty Compatible with: Rackmounts: R630 R730 R730xd R830 R930 XR2 XR11 XR12 R6415 R7415 R7425 R6515 R6525 R7515 R7525 R450 R550 R650 R650x R750 R750xs R750xa  Towers: T5820 T7820 T7920 T550 Blades: MX740C MX840C C6520