LaCie d2 Extreme drives comes in the following three case sizes: LaCie Bigger Disk Extreme for professional use comes in a compact 5.25’’ 2U design and offers fast data transfer rates of up to 88MB/s and 800Mbits/s per bus with FireWire 800. Drives feature special new pipes that help draw heat away from the hard drive, as well as automatic temperature-controlled smart fans that shut off when not needed making them even quieter than previous generation Bigger Disk Extremes. Available capacities include 1TB ($900), 1.2TB ($1100) and 2TB ($2300). LaCie Big Disk Extreme for professional use comes in a compact 5.25’’ 1U design and offers the same fast data transfer rates and heat dissipation features as the Bigger Disk Extreme. Available capacities include 1TB ($1200), 600GB ($480) and 500GB ($400). LaCie d2 Extreme for home use comes in a compact 3.5’’ 1U design and offers data transfer rates of up to 64MB/s with FireWire 800. Drives are equipped with standard heat dissipation features, though no fan is needed in this single-drive model. Available capacities include 160GB ($180), 250GB ($220), 300GB ($260) and 500GB ($600).