Sun Microsystems Ultra 30 Reference Manual page 55

5.5.2 PCI Card Slot Operating Frequencies
TABLE 5-7
PCI Card Slot
PCI66 Slot 1 J1301
PCI Slot 2 J1401
PCI Slot 3 J1501
PCI Slot 4 J1601
All Ultra 30 system PCI card slots operate at 32-bit or 64-bit bus widths.
Most PCI cards operate at 33 MHz.
Cards designed to operate at 66 MHz must be installed in the PCI66 slot.
Note – If you install a 33 MHz PCI card in PCI66 Slot 1, see the card manufacturer's
documentation and verify that the card will operate with an I/O signaling level of
3.3 volts.
PCI Card Slot Operating Frequencies
Operating Frequency
or Frequencies
66 MHz
33 MHz
33 MHz
33 MHz
33 MHz
Input/Output Signaling
Level
3.3 volts
3.3 volts
5.0 volts
5.0 volts
5.0 volts
Chapter -9