Slim and Feshionable Design 88 Keys; 10 Multimedia Keys Available Port: PS/2 and USB System: WINDOWS95/98/2000/NT/ME/XP Peak Force：45+7g Life Cycle: ≥10,000,000 Times Operating Temperature：0~45℃ Operating Humidity：10%-90% Product Dimension：330*168*12mm Inner Box Dimension：350*185*20mm Carton Dimension：440*390*198mm Qty： 20 pcs/ctn