Apacer MicroSD Memory Cards Apacer MicroSD memory cards are data storage Memory Cards designed specifically for MicroSD Card applications that put a premium on small form factors with lower power. They are functionally compatible with the SD memory cards but are smaller in dimensions. A MicroSD Memory Card can be inserted into a passive SD Memory Card Adapter and operate as an SD Memory card. All technical drafts follow DIN ISO standard. The Apacer MicroSD cards meet SDA (SD Card Association) specifications and are ideal for applications such as cameras, smartphones, digital recorders, MP3 players, PDAs, and electronic toys. These microSD cards feature firmware technology that reduces the Write Amplification Factor (WAF) significantly.