The mobile storage wars are on and all of the top hard drive manufacturers are looking to one-up each other. Fujitsu fired the latest shot yesterday with the introduction of its new 300GB external HDD.

The 2.5"-based drive features a SATA interface internally and a USB 2.0 interface for connecting to a notebook computer. The drive also features a 16-point omnidirectional shock mounting design to protect the drive for rough handling.

"We are proud to launch the world’s highest capacity 2.5" External HDD product into the marketplace at a time when consumers are demanding more storage, compact designs, and features that advance the level of data security," said Fujitsu's Lorne Wilson. "Fujitsu has almost forty years of experience in the hard disk drive industry, and we have successfully expanded our 2.5" HDD business over the last fourteen years. As a result of our focus and commitment to R&D, we have been able to leverage our expertise in this field to create an ideal solution for portable backup and storage solutions."

While Fujitsu may now hold the storage crown with its new drive, the spindle speed is a disappointing 4200RPM. The latest 250GB drives announced feature 5400RPM spindle speeds while 200GB units are spinning at 7200RPM.

The MSRP for Fujitsu's new drive is $229 and it will be available during the third quarter.