Today's PC motherboards feature a variety of PCI slot types. Here, for example, is a typical motherboard with varying types of slots:
The numbers correspond to the following slot types:
1: PCI-Express x8 slot
2: 32-bit 5.0 volt PCI slot
3: PCI-Express x4 slot
4: 32-bit 5.0 volt PCI slot
5: 64-bit 3.3 volt PCI slot
6: 64-bit 3.3 volt PCI slot
PCI-Express x8 and x4 respectively, are compatible with the following Digium telephony card products:
32-bit 5.0V PCI, are compatible with the following Digium telephony card products:
64-bit 3.3V PCI, are compatible with the following Digium telephony card products: