Bus Interface :

 PCI

Specification :
 32bit, 33MHz PCI interface compliant with PCI Local Bus V2.2
 Hot-pluggable feature allows you to connect/disconnect devices
      without powering off PC

USB 2.0 :

 3 ports (2 external and 1 internal)
 Support up to 127 devices
 Compliant with USB 2.0 ECHI standard (high speed 480Mbps)
 Compliant with USB 1.0a/1.1 OHCI standard (full-speed 12Mbps &
      low-speed 1.5Mbps)
 Built in OHCI driver supported from Microsoft Windows 98, 98SE,
      ME, 2000, XP and Mac OS 8.5+

IEEE 1394 :

•  3 ports (2 external and 1 internal)
•  Support up to 63 devices
•  Built in driver supported from Microsoft Windows 98, 98SE, ME, 2000, XP and Mac OS 8.5+

•  Compliant with IEEE 1394 - 1995, P1394a (rev 1.1) and OHCI specification 1.0