WD408AA - Western Digital Caviar 40.8GB 5400RPM ATA-66 2MB Cache 3.5-inch Hard Disk Drive

WD408AA-00BAA0 - Western Digital Caviar 40.8GB 5400RPM ATA-66 2MB Cache 3.5-inch Hard Disk Drive

WD408BB - Western Digital Caviar SE 40GB 7200RPM ATA-100 2MB Cache 3.5-inch Hard Disk Drive

WD408BB-00AUA1 - Western Digital Caviar SE 40GB 7200RPM ATA-100 2MB Cache 3.5-inch Hard Disk Drive

WD40BEVS - Western Digital 40 GB Plug-in Module Hard Drive - SATA - 5400 rpm - 8 MB Buffer

WD40BEVS-75RST0 - Western Digital Scorpio Blue 40GB 5400RPM SATA 1.5GB/s 8MB Cache 2.5-inch Hard Disk Drive

WD40E31X - Western Digital Blue 4TB SATA 6GB/s 64MB Cache 3.5-inch Internal Desktop Solid State Hybrid Drive

WD40E31X-00HY4A0 - Western Digital Blue SSHD 4TB 5400RPM SATA 6GB/s 64MB Cache 8GB NAND MLC SSD 3.5-inch Hybrid Hard Disk Drive

WD40E31XSP - Western Digital Blue SSHD 4TB 5400RPM SATA 6GB/s 64MB Cache 8GB NAND MLC SSD 3.5-inch Hybrid Hard Disk Drive

WD40EFRX-68WT0N0 - Western Digital Red 4TB 5400RPM SATA 6GB/s 64MB Cache 3.5-inch Hard Disk Drive

WD40EURX - Western Digital 4TB 5400RPM (intellipower) SATA 6GB/s 64MB Cache 3.5-inch Internal Hard Drive

WD40EURX-64WRWY0 - Western Digital AV 4TB 5400RPM SATA 6GB/s 64MB Cache 3.5-inch Hard Disk Drive