The drives feature SMART-BURN, SMART-X, the VAS system, DVD+R9 2.4x (double-layer) support, and a 2MB buffer. They are compatible with Microsoft Windows 98, Me, 2000,, and XP. All configurations include recording and playback software, documentation, cables, and mounting hardware. The external Xtreme 16 USB drive carries an MSRP of $149.99. The internal Mach 16 has an ATAPI/E-IDE interface and an MSRP of $99.99.