protech PC-550, User Manual, Page: 8 / 106

Chapter 1 Introduction
PC-550 USER
′
S MANUAL
Page: 1-3
1-2. SYSTEM SPECIFICATION
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CPU :
Intel, AMD, Cyrix.
54C/55C/M1/M2/K5/K6.
320/321 pin PGA socket.
75/90/100/120/133/166/200/233/266MHz clock generator.
2.8V/2.9V/3.2V/3.3V/3.5V voltage regulator.
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MEMORY :
Up to 256MB, EDO/FPM DRAM
Four 72-pin SIMM socket on board.
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CACHE :
L1 Cache (depended on CPU type).
L2 Cache on board 512K. (256K optional)
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REAL-TIME CLOCK / CALENDAR :
CMOS data back up from BIOS set or BIOS default.
Dallas DS 12887 Real Time Clock.
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BIOS :
Award, Flash BIOS for plug & play function.
Easy update 128/256KB flash EEPROM.
Support Green Function .
Support S/IO Setup.
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KEYBOARD CONNECTOR :
PC/AT type mini DIN connector.
Support PC/AT Keyboard or PS/2 Mouse by jumper selection.
5 pin External keyboard connector.
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BUS SUPPORT :
External ISA / PCI BUS.
Internal PCI Bus, for VGA, IDE, & SCSI.
External PC-104 BUS.