System Overview
2–9
Table 2–4: Motherboard Components
Figure
Legend
Components
1 Power (+/- 12, +/-5 VDC) connector.
2 Power (+3.3 VDC) connector.
3 Memory banks (up to two banks of four SIMMs each).
4 Floppy disk controller (FDC) connector.
5 Internal SCSI connector.
6 Front-panel connector.
7 DECchip 21064A CPU (socketed).
8 Interrupt PAL.
9 Factory diagnostic port.
10 Factory serial ROM (if present).
11 Battery.
12 Riser card connector.
13 Ethernet ID ROM.
14 Headphone jack.
15 Microphone jack.
16 Audio line in jack.
17 Network LEDs.
18 Twisted-pair Ethernet connector.
19 COM 2 port.
20 COM 1 port.
21 External SCSI port and parallel port.
22 Mouse and keyboard connectors.
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