Using the Tempo RAID133's striping function, your system can realize significant performance gains over its original single hard drive - performance perfect for disk-intensive tasks such as multimedia authoring and image editing. The dual independent IDE channels of this card fully utilize the onboard 32-bit PCI Bus Master for a data transfer rate up to 133 MB/s! Because the Tempo RAID133 utilizes onboard Open Firmware, you can even boot from attached drives to shorten your start up times and speed the Mac OS' operation. With the wide range of low-cost, high-capacity ATA hard drives available today, there is no better time to take advantage of this amazing product to enhance the capabilities of your Macintosh. Sonnet's Tempo RAID133 card gives you the benefits of a RAID at an IDE price!