Main Features • 40GB • 5400 rpm • EIDE Ultra ATA/100 3.5" internal hard drive with 2MB buffer for PCs and Macs A cost-efficient design with features you would expect from a more expensive drive Barracuda 5400.1 delivers a cost-efficient design with features you would expect from a more expensive drive. Whether integrating into an entry-level PC or consumer electronics application, Barracuda 5400.1 is the ideal solution for cost-sensitive systems.