WD 4TB My Passport Portable Hard Drive USB 3.0 Model WDBYFT0040BBL-WESN Blue Dimensions: 0.85 x 4.33 x 4.33 Weight: 0.54 lb. Package Contents: Portable hard drive x0AUSB 3.0 cable x0AWD Backup, WD Security and WD Drive Utilities software x0AQuick install guide