Dialogic Diva PRI/E1-30. Connectivity technology: Wired, Host interface: PCI. Safety: EN60950-1, EN55022, EN55024. Power requirements: 3.3V, 5V (PCI); 3.3V, 12V (PCI Express), Form factor: PCI / PCI Express, Compatible operating systems: Microsoft Server 2003 Windows 2000/XP Linux Red Hat/SUSE/Debian