Adapter card to 2.5 sata for WD5000MPCK WD5000M22K WD5000M21K WD5000MPCK WD5000M22K WD5000M21K to 2.5 SATA adapter. The speed and other properties is not changed,only form conversion interface. You can connect it to laptop or desktop. Transparent to the operating system and does not require any software drivers. Only sell adapter card,the HDD is not included.