its Crusoe processors.
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Teco's TR5670-XPe weighs just 3.3 lbs and features an internal power supply and fanless operation. In addition to its 667MHz Crusoe TM5500 processor, it offers between 192MB and 512MB Flash memory, built-in PCMCIA and PCI slot expandability, 2 PS/2 and 4 USB ports, 10/100 BaseT Fast Ethernet, SVGA video output (up to 1600 x 1200 pixels), and audio in/out jacks.
The TR5670-XPe runs Microsoft's Windows XP Embedded operating system and includes Microsoft Internet Explorer 6.0. Support is included for Microsoft RDP 5.2 and Citrix ICA 7.0 protocols as well as for a wide range of terminal emulations.