1. 1U Rackmount Fanless2. Support Celeron/Pentium M CPU3. Onboard 512MB DDR2 and 1 x SO-DIMM Socket4. Support 8/16 RS-232/422/485 with 15KV ESD Protected5. Support 6 x Giga LAN6. Support Compact Flash Type II7. Support 2.5" SATA HDD