A set of 2 1K PTC Thermistor. This is not a rare part but hard to find.
ATmega162 Programmed Microcontroller x0xb0x Firmware SokkOS V1.9.1
Black Laser Engraved I/O Panel
Black aluminum laser engraved top panel.
Stock I/O panel. This is the same panel from the adafrut kits.