Chapter 1 Product Description 1-7
1.1.4 Internal Hard Disk Drive
Diskful systems have one 3.5-inch embedded SCSI hard disk drive installed in the
top half of the system unit. Depending on your system configuration, the drive may
be a 207-megabyte, a 424-megabyte, a 535-megabyte, or a 1.0-gigabyte disk. (The
SPARCclassic X terminal is not a diskful system.)
1.1.5 Internal Diskette Drive
The top half of the system unit accommodates a 3.5-inch, triple-density diskette
drive, which is Sun™, IBM®, and NEC® compatible. It uses 3.5-inch (88.9-mm)
diskettes (types HD, 2HD, and 2DD) and supports densities of 720 kilobytes, 1.2
megabytes, and 1.44 megabytes. The diskette drive is optional on both SPARCclassic
and SPARCstation LX systems. It is not available for the SPARCclassic X terminal.
1.1.6 Power Supply
The 70-watt power supply is housed in the unit top. It connects to the main logic
board via a 12-pin connector and provides +5, +12, and –12 volts DC. The power
supply also supplies the power-on reset signal.
Some of the power supply’s features include the following:
■ Auto sensing
■ Output voltage regulation
■ Overcurrent protection
■ Overvoltage crowbar feature
■ Internal fusing
The external devices have their own power supplies.
1.2 Monitors, Keyboard, and Mouse
Each system uses a keyboard, an optical mouse, and one of the following types of
video monitors:
■ 15-inch color monitor (381-mm)
■ 16-inch mid-range color monitor (407-mm)
■ 16-inch premium color monitor (407-mm)
■ 19-inch grayscale monitor (483-mm)
■ 19-inch color monitor (483-mm)
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