Sun Microsystems 60 service manual CD-ROM drive Or tape drive Diskette drive Power LED

FIGURE 1-2illustrates the system unit front view. FIGURE 1-3illustrates the system unit rear view. System unit electronics and peripherals contain (or may be upgraded to contain) the following features:

■Tower enclosure with 350-watt power supply.

■Support for modular UltraSPARC II 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 UPA coherent 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

■Two UPA graphics slots.

■10-/100-megabits per second Ethernet.

■40-Mbytes per second UltraSCSI.

■Two DB25 serial ports (synchronous and asynchronous protocols).

■Centronics-compatible parallel port interface with extended capability port (ECP) support.

■Modular audio interface.

CD-ROM drive
(or tape drive)
Diskette drive	Power LED
Second 3.5-inch drive bay	Power On/Standby
	switch

FIGURE 1-2System Unit Front View

1-4Sun Ultra 60 Service Manual • August 2001