Compatible System: IBM System Servers: - x3400 M2 7836 - x3400 M2 7837 - x3500 M2 7839 - x3550 M2 4198 - x3550 M2 7946 - x3650 M2 4199 - x3650 M2 7947 For more information, please see official website. Features: Mfgr's System P/N's: 46C7449 (3pcs) (IBM); 49Y1436 (3pcs) (IBM); FRU 82Y1999 (IBM) Parts: Lifetime limited Labor: Lifetime limited