The CPU/Memory+ board centerplane connector is mounted on the rear of the board. The connector is divided into modular sections (see Figure G-2). The connector has one three-bladed power section. The rest of the connector contains six 120-pin rows, labeled A through F. Each section (1 through 5) has 24 pins of each 120-pin row.

Figure G-2 Centerplane Connector Detail

CPU Module Connectors

There are two connectors for each CPU module, one with 144 pins and the other with 288 pins. See Figure G-3.

Figure G-3 CPU Modules 0 and 1

I/O+ Boards

Figure G-4, Figure G-5, and Figure G-6 show the locations of the connectors and slots on the I/O+ boards.

Figure G-4 SBus+ I/O Board Connectors

Figure G-5 Graphics+ I/O Board Connectors

Figure G-6 PCI+ I/O Board Connectors

Centerplane Connector

Information for the CPU/Memory+ board centerplane and the I/O+ boards centerplane is the same. See "Centerplane Connector".

SBus Connectors

Two I/O+ boards have SBus connectors:

The SBus+ I/O board has three SBus connectors, SBus 0, 1, and 2. See Figure G-7.

The Graphics+ I/O board has two SBus connectors, SBus 0 and 2. See Figure G-8.

Figure G-7 SBus I/O+ Board SBus Connectors

Figure G-8 Graphics+ I/O Board SBus Connectors

UPA Connector Location

The Graphics+ I/O board has one UPA connector.

Figure G-9 Graphics+ I/O Board UPA Connector

Ethernet and MII Connectors

There is one onboard twisted-pair Ethernet (TPE) connector on the SBus+ I/O board (see Figure G-4), the Graphics+ I/O board (see Figure G-5), and the PCI+ I/O board (see Figure G-6).

There is one media-independent interface connector on the SBus+ I/O board (see Figure G-4) and the Graphics+ I/O board (see Figure G-5). The PCI+ I/O board does not have an MII connector.

Note -

The onboard Ethernet and MII ports share one set of I/O circuitry, so both ports cannot be used at the same time.

GBIC Connectors

Figure G-10 SBus I/O+ Board GBIC Slots

Figure G-11 Graphics+ I/O Board GBIC Slots

PCI Connectors

Figure G-12 PCI+ I/O Board Slots

SCSI Connector

There is one on-board SCSI connector on the SBus+ I/O board (see Figure G-4), the Graphics+ I/O board (see Figure G-5), and the PCI+ I/O board (see Figure G-6).

Clock+ Board

Figure G-13 shows the clock+ board connectors.

Figure G-13 Clock+ Board Connectors

Centerplane Connector

The clock+ board centerplane connector interfaces the board to the system. The connector is divided into six rows of pins labeled A through F; each row has 72 pins.

Serial Port Connectors

Figure G-14 Serial Port A and B Connector Pinouts

Keyboard and Mouse Connector

Figure G-15 Keyboard and Mouse Connector Pinouts

Interface Board (IB)

Figure G-16 GBIC Slots