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Ending today, and as one of its 12 Days of Deals, Western Digital offers its Western Digital My Passport Ultra 4TB External Hard Drive in Black for $99.99 with free shipping. That's the lowest price we could find by $20. It's USB 3.0 compatible.

Don't need that much storage? It's also available in 2TB for $69.99, also with free shipping. That's the lowest price we could find by $20.