User`s manual

A-5
Assembly Drawings
PM1554U2, PM2554U2 and PM2654U2
J7
8 7 6 5 4 3 2 1
IRQ
P4
P6
pin-1
P9
RA4050 Module Connector
J10
pin-1
J11
pin-1
P4 Pins 1-2 NVRAM Clear
Pins 3-4 Misc (Reserved, do not use)
P6 Disk Activity LED Connector
P9 Pins 1-2 Retry (Reserved, do not use)
Pins 3-4 Reset (Reserved, do not use)
J7 Bus Expansion Module Connector
J10 Internal Ultra2 Wide SCSI Connector (Bus 0)
J11 External Ultra2 Wide SCSI Connector (Bus 0)
1…8, IRQ Adapter Activity LEDs