It is fanless, diskless, and compact (255 x 152 x 69 mm), making it well-suited for space-constrained environments. The UNO-2182 supports SATA storage devices internally & externally, providing higher transmission speeds, third party connectivity for optical devices and RAID capability. Also included, 2x RS-232 and 2x RS-232/422/485 ports with automation flow control, 2x 10/100/1000 Base-T Ethernet ports, two USB and one type I/II PC card, PCI-104 expansion, audio mic in, line in, and line out, and supports Windows XPe (SP2 with 2008 feature pack), Windows 2000/XP, and Linux.Advantech Corp., Industrial Automation Groupwww.eautomationpro.com/us