LC-Power EH-25MP. Size: 63.5 mm (2.5 "). Compatible operating systems: Win 98/ME/2000/NT/XP Mac OS 8.6, Minimum processor: Pentium III 500 Mhz, Minimum RAM: 128 MB. Colour of product: Silver. Dimensions (WxDxH): 90 x 144 x 20 mm. Material: Aluminium