4TB total storage capacity. Western Digital My Book Thunderbolt Duo 4TB. Features fast Thunderbolt connectivity and dual-drive performance, making it perfect for handling demanding projects and workflows.
Western digital My Book Thunderbolt Duo 6TB External Hard Drive (6144 GB, Black, Silver)
WD My Book 4TB-22TB External Desktop HDD - USB 3.0, Password Protection, Backup
WD My Book Essential 500 GB USB 2.0 Desktop External Hard Drive
WD My Book 8 TB External Desktop Hard Drive USB 3.0
Western Digital WD My Book Studio 3TB FireWire 800 External Hard Drive Mac
Western Digital WD My Book 4TB, External USB HDD, 100 Power On Hours
