X3550 M4 4X2.5 HDD Backplane Expansion Board Card W/ Cables — For 81Y6657 94Y7587 81Y7251

Replacement backplane expansion for the X3550 M4 server supporting 4X2.5 HDDs. Compatible with part numbers 81Y6657, 94Y7587 and 81Y7251. Supplied as the expansion card W/ Cables required for installation into the X3550 M4 chassis.