PCI-Express 2.0 x1 (Compatible with PCI-Express 1.0). 2 Internal ports. Up to 2 SATA devices with point-to-point connectivity. Port Multiplier support up to 10 SATA Devices. RAID level 0, 1, 5, 10 and JBOD. Multiple RAID Support. BIOS Boot to RAID with point-to-point connectivity or through port multiplier. Quick, Background or Foreground Initialization. OCE/ORLM (Online Capacity Expansion / Online RAID Level Migration). Hot plug and Hot Swap. Hard drive activity and failed LED. HighPoint RAID Management Suite (Browser based, CLI and BIOS management through hotkey (ctrl-h). Monitoring (SHI Storage Health Inspector), Event log, SMTP and Alarm. Windows, Linux ,Mac OS X 10.x and FreeBSD. RoHS compliant.