Yes it is. I use this card with a D300 myself.
The Olympus E500 camera is compatible with CompactFlash memory cards.
The Canon Rebel XT camera is compatible with CompactFlash memory cards.
The Olympus E-500 camera is compatible with CompactFlash memory cards.
The Canon Rebel XT camera is compatible with CompactFlash memory cards.
The SanDisk ImageMate line will be perfectly plug-and-play with your PC.
Yes, Sony manufactures a "Memory Stick PRO" type of card and that is compatible with the SanDisk ImageMate SDDR99A15 reader.
Yes.
The Sandisk Extreme III bundled reader will unfortunately only read SD and SDHC cards.
SanDisk is a brand of memory card. The Canon A540 takes a certain type of card, see its instrucvtion book, probably it's a CompactFlash, but it may be a SecureDigital (SD). Take the camera to a pghoto retsailer and get the right card - many cameras are fussy about just which manifestation of card they can accept. SanDisk will almost certainly make a card to suit your camera.
The most common uses of a SanDisk 8GB memory stick are storage of pictures, files and various documents. A SanDisk 8GB memory stick is designed for long term storage.
only SanDisk SDMMC cards will fit
Well in my answer the best memory brand is sandisk