IIS SecureDigital Cards are used typically in digital 　cameras, digital music players, digital video camcorders, 　cellular phones, smart phones, handheld PCs, car navigation 　systems and electronic books. IIS SD cards are currently available in densities ranging 　from 32/64MB to 32GB. IIS SD cards are a secure means for storing your 　important information in a card slightly larger than a postage 　stamp. Forward compatibility to MultiMedia Cards • Powerful security 　and copy protection. Built-in write protection features. Specification Capacity:128/256/1G to 32GB Dimension:32*24*2.1mm Number of Pins:9 Speed Target:1000kbp(USB1.1) & 4Mbps(USB2.0) Operating Voltage:2.7V to 3.6V Operating Temperature:-25°C to +85°C Storage Temperature:-40°C to +85°C Relative Humidity:8 to 85% max Variable clock rate 0-25 MHZ