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There's also a choice of 7,200 RPM, 10,000 RPM, or MLC SSD storage with RAID 0 or 1 configurations, and known connectivity includes gigabit Ethernet, eight USB 2.0 ports with optional eSATA and FireWire, and audio in/out. Operating system options include Windows 7 Professional, Windows XP, or Red Hat Enterprise Linux 5.
Lenovo took a moment to mention the environmental bonus of buying the E20, which uses over 50% post-consumer plastics, has earned various Green certifications, and uses an 80 Plus Bronze PSU. The company plans to ship the E20 later this month, but the system doesn't seem to be available for purchase just yet.