1. 1 U Rackmount Fanless2. Support Celeron M, Pentium M CPU3. Onboard 512KB 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