-Dimension: 20mm(W)x21.5mm(L)x1.4mm(T) -Add MiniSD card adapter can be use in SD card socket. - Noise-free operation 2.Specification: Capacities: 32MB,64MB,128MB,256MB,512MB,1GB,2GB,4GB Interface: 11-pin interface but can be fitted with a 9-pin adapter Supports: SD and SPI communication protocols Complies with SD Card Specification Ver 1.01 (Function, Electrical Characteristic, Registers) Complies with MiniSD Specification Ver 1.02 and forward compatibility to MultiMedia Card. On card error correction Low power consumption : Automatic power down and automatic wake up, smart power management Bearing textual information and image No external programming voltage required.