WD_BLACK™ Performance Desktop Hard Drive 8TB WD_BLACK™ hard drives are designed for desktop PC and power users who demand performance, with a variety of upgrade options available. Specifications: Cache Size 256 MB Capacity 8 TB Interface SATA Transfer Rate up to 263MB/s Form Factor 3.5 Inch Disk Speed (RPM) 7200rpm Compatibility PC Mac (requires reformatting) Recording Technology CMR Dimensions (L x W x H) 5.79" x 4" x 1.03" In The Box Performance hard drive Acronis True Image WD Edition Software Quick install guide