Sun Microsystems Netra t 1120, Service Manual

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1-2 Netra t 1120/1125 Service Manual • August 1998
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Use of SIMMs, with an interleaved memory system. Each pair of SIMM slots (four
rows of two pairs each) accepts 32, 64 or 128Mbyte SIMM modules. Populating
with two pairs of identical capacity SIMMs enables the memory controller to
interleave and overlap, providing optimal system performance. There are a total
of 16 SIMM slots.
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Four PCI slots:
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Three 33MHz, 64- or 32-bit, 5Vdc slots
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One 66MHz or 33MHz, 64- or 32-bit, 3.3Vdc slot.
Universal PCI cards can be used in any of the four PCI slots.
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10/100megabit per second (Mbps) Ethernet.
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Dual channel 40Mbps UltraSCSI (Fast-20).
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Two DB-25 serial ports (synchronous and asynchronous protocols).
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One parallel port.
FIGURE 1-1
Netra t 1120 System Unit Front View
FIGURE 1-2
Netra t 1125 System Unit Front View
1125