Table 2-4: Motherboard Components - HP Digital AlphaStation 255 Family User Information

Table 2–4: Motherboard Components
Figure Components
Legend
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.
System Overview
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