Operating instructions

Common Components
The basic building block of the system is the chassis, which houses the following
common components:
• Up to two CPUs (EV68 Alpha chip)
• 200-pin memory DIMMs (up to 16 with a minimum of 4)
• I/O (located on system motherboard) with six 64-bit PCI slots:
Four hot-swap PCI slots with two at 66 MHz (3.3 V) and two at 33 MHz
(5.0 V).
• CD-ROM read/write drive
• One storage cage that houses up to six 1-inch universal drives
• Up to three power supplies, offering N+1 power
• A 25-pin parallel port, two 9-pin serial ports, mouse and keyboard ports
• An operator control panel with:
Diagnostic LEDs
Power button with green LED
Halt button with amber LED
Reset button
System Overview 1-3