1-4 Sun Ultra 60 Service Manual • August 2001
FIGURE1-2 illustrates the system unit front view. FIGURE1-3 illustrates the system unit
rear view.System unit electronics and peripherals contain (or may be upgraded to
contain) the following features:
■Towerenclosure with 350-watt power supply.
■Support for modular UltraSPARCII processor with up to a 4-megabyte (Mbyte)
Ecache and system operating frequencies from 100 megahertz (MHz) to 400 MHz.
■83.3-MHz to 120-MHz UPAcoherent memory interconnect.
■Use of dual in-line memory modules (DIMMs). Each group of four DIMM slots
accepts 16-, 32-, 64-, or 128-Mbyte DIMM modules. Populating with four identical
capacity DIMMs enables the memory controller for optimal system performance.
There are a total of 16 DIMM slots.
■Four PCI slots: three 33-MHz, 64-bit or 32-bit, 5 Vdc slots; one 66-MHz or
33-MHz, 64-bit or 32-bit, 3.3 Vdc slot
■TwoUPA graphics slots.
■10-/100-megabits per second Ethernet.
■40-Mbytes per second UltraSCSI.
■TwoDB25 serial ports (synchronous and asynchronous protocols).
■Centronics-compatible parallel port interface with extended capability port (ECP)
support.
■Modular audio interface.
FIGURE1-2 System Unit Front View
CD-ROM drive
Diskette drive
Second 3.5-inch drive bay Power On/Standby
Power LED
(or tape drive)
switch