Toshiba Canvio Partner 4TB SB 3.0 Portable External Hard Drive

Toshiba Canvio Partner 4TB SB 3.0 Portable External Hard Drive Overall is good but over all good doesn't matter for me . Data transfer speed is good . But actual space is very very very less only 931 gb is available. 69 gb gb is it's too many space for cut from this company side. Technical Details Brand : Toshiba Model : Canvio Technical Spec Model Name : Canvio Partner Type : HDD Capacity : 4 TB Color : Black System Requirements : Mac OS, Windows® PC Form Factor : Portable Cloud Backup : No Number of Ports : 1 Connector Type : USB 3.2 Gen 1 Cable (Type A to Micro-B) Case Material : Plastic Data Transfer Rate : Up to 5.0 Gb/s Rotational Speed : 5400 RPM Water Resistant : No Other Features : Matt Finish Power Source : USB-powered External Power Required : No