Sun Microsystems SPARCstation 20, Service Manual

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1
C H A P T E R
1
Product Description
The SPARCstation™ 20 system accommodates up to 512 megabytes (Mbytes) of
memory using dynamic single in-line memory modules (DSIMMs) and video single
in-line memory modules (VSIMMs).
Installing a second VSIMM is done through
the optional auxiliary video board (AVB).
Standard Features
The SPARCstation 20 system has four audio ports on the back panel and contains an
internal speaker. A variety of internal storage devices are available:
■
535-Mbyte hard disk drive
■
1.05-Gbyte hard disk drive
■
2.1-Gbyte hard disk drive
■
Diskette drive
■
SunCD 2Plus™™ drive
■
SunCD™™ 4 drive
Note –
The SPARCstation 20 system is configured with one of two chassis types: a
chassis that supports the 1-inch SunCD 2Plus drive and a chassis that supports the
1.6-inch SunCD 4 drive.
FIGURE 1-1
shows a typical SPARCstation 20 system. Appendix B provides detailed
system information.