A-2 Sun Ultra 20 M2 Workstation Service Manual • January 2007
A.1 System Components and Features
TABLE A-1 shows the system’s key components.
TABLE A-1 Sun Ultra 20 M2 Workstation Components
Component Description
CPU
• One dual-core AMD Opteron processor
• Processor frequencies: 1.8 GHz and faster
• 1 MB Level 2 Cache per processor core
Memory
• Four DIMM slots
• 512 MB, 1 GB, 2 GB unbuffered
DDR2-667, unbuffered, ECC
DIMM
modules supported (see Section A.2, “Memory
Configurations” on page A-3
)
Media storage
DVD-ROM or DVD-Dual
Hard disk drives
Up to two SATA disk drives
Power supply
400W PSU
Network I/O
Onboard 10/100/1000BASE-T Gigabit Ethernet controller providing
2 RJ45 connectors on the back panel
Video
Onboard ATI graphics controller with DB15 VGA graphics
connector
PCI-E I/O and PCI I/O
(see Section A.3, “PCI-E
and PCI Expansion
Slots” on page A-4)
• One PCI Express x16 graphics slot
• One PCI Express x1 expansion slot
• One PCI Express x16 mechanical connector slot
(PCI-E x8 electrical)
• Three PCI 33 MHz 32-bit slots
Other I/O
• Six USB 2.0 connectors (two on the front and four on the back of
the workstation)
• Two IEEE 1394 connectors on the front panel
• Line-in/line-out jacks on the back panel
• Microphone-in jack on the front and back panels
• Headphone-out jack on the front panel
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