The baseboard has one ISA slot that is full-length if the wide SCSI-B slot is not used (and half-length if the wide SCSI-B slot is used); the ISA slot supports slave-only boards and is shared with PCI-B slot 4. The ISA has three embedded devices: the Super I/O chip, Baseboard Management Controller (BMC), and flash memory for system BIOS.

ISA features:

• Bus speed up to 8.33 MHz
• 16-bit memory addressing
• Type A transfers at 5.33 MB/sec
• Type B transfers at 8 MB/sec
• 8- or 16-bit data transfers
• Plug and Play ready

The baseboard has two 32-bit PCI bus segments: PCI-A and PCI-B. These provide seven slots for PCI add-in boards: three on PCI-A and four on PCI-B. PCI-B4 is shared with the ISA slot. PCI-A1 supports half-length boards only. The other slots support full-length boards.

PCI features:

• 33 MHz bus speed
• 32-bit memory addressing
• 5 V signaling environment
• Burst transfers of up to 133 MB/sec
• 8-, 16-, or 32-bit data transfers
• Plug and Play ready
• Parity enabled

Installing an add-in board