The 2.5-inch product line offers 100 GB, 200 GB, r00 GB and 800 GB.

FORBES: New Solid State Drives for Enterprise Applications

The companies expect a rapid transition in their product mix to 128 Gb devices in 2012.

FORBES: New Flash Memory Devices Will Lead to 128 GB Consumer Products and More Flash in Computer Systems

In 2010, Hypershop introduced a battery powered HyperDrive external HDD product offering up to 750 GB of external storage through the proprietary USB-based interface on the iPad.

FORBES: Changing Digital Storage Requirements for Clouds and Mobile Devices

Solid-state drives (SSD) with 32 MB to 120 GB of storage capacity, represent the final product category.

FORBES: Digital Clutter Buster

The So Extreme SuperSpeed SSD product line offers consumers a storage option of either 80 GB (Intel M-25) or 160 GB (Intel M-25).

ENGADGET: Dane-Elec comes clean with external USB 3.0 HDDs / SSDs

Seagate Technology was showing a similar external WiFi storage device in their suite at the 2011 CES and announced a product in late May (the GoFlex Satellite) offering 500 GB of WiFi storage.

FORBES: Is 64 GB Big Enough -- Why Tablet Computers May Need More Storage?

Kingston has updated their Wi-Drive MobileLite product to include memory card slots for expanding the storage capacity of the device up to 32 GB.

FORBES: Faster Cables and Your Cloud: Some Highlights from the 2013 Storage Visions and CES Conferences