SD or just MMC?

[Takotchi]

HP's site mentions the extended battery with Multimedia Card slot... though most people call it a SD slot. Obviously they aren't the same. So what is it, really, just MMC or SD?

[qwkrjk]

Actually, they are (or should be) the same. Secure Digital media only includes security features that MultiMedia Cards lack. There may also be a difference in speed. Otherwise, they both share the same format.

[bradhaak]

SD has extra pins on the connector. An SD card is also slightly thicker. So a pure MMC slot is not SD compatible.

However, I read somewhere that the HP battery slot would be SD compatible. We will find out when it becomes available.

[Takotchi]

I figured that, seeing as everybody is using SD now instead of MMC (well, almost everybody).

Trust me, I use the EM-500, and there's a big difference in speed between SD and MMC. MMC is much much slower.