by 
WD is shipping what it says is the world’s first ultra-slim 2.5-inch, 5 mm hard drives and solid state hybrid drives (SSHD), which are designed for integration into the slimmest devices and space-constrained computing environments.
With 500GB of storage capacity and models with high performance-enabling solid state hybrid drive technology, this slim product line helps to address the tradeoffs system designers often make between capacity, physical size and performance, says Matt Rutledge, vice president of WD’s client computing business unit.
read more
