Memory Replacement Kit, 4GB SSM, M551 ** Compatible with**
- HP Colour Laser Jet Ent. M551dn (CF082A)
- HP Colour Laser Jet Ent. M551n (CF081A)
- HP Colour Laser Jet Ent. M551xh (CF083A) ** Dimensions (in)** 11.0" x 7.0" x 6.0" ** Unit Weight** 3 lbs