Rating: 
Summary: Nice affordable sd card, if you get one that works
Review: Apparently you have about an 80% chance of getting one that works, and another 80% chance of having a compatable product. Esp w/ with products from obscure places like Dell and RIO, which SANdisk does not claim to be compatable with. But other than those it'll be great(The remaining 64% of the time.) Just be sure to buy it from a place that will give you credit against a lexar purchase since there's a slightly less than even chance that you'll need to return it.
Rating: 
Summary: SD Memory 512 MB
Review: Card worked for the 1st time then it quit working and none of the 5 computers or the 3 readers could read it or even see it?
Rating: 
Summary: Nice SD Card
Review: Great performance and nice price. I have had a great experience with SanDisk products.
Rating:
Summary: BAD quality! stay away!
Review: I bought this (Sandisk 512 MB Secure Digital) in February and gave it to my mom as a gift in May. She used it in her digital camera and took pictures with it for her college reunion. Afterwards, the card displayed "Corrupt Data" and the pictures were lost! Do NOT buy this card, if you do not believe me, do a search for this card and you will see similar testimonials!
The grief and sadness this card has caused me is not worth its cheaper price!
user be warned!by the way, the one i have is made in china, i have read these ones are the WORST
Rating:
Summary: slow card
Review: I bought this card in November, and it is now December. 1 month is all that it lasted. It won't format, it won't recognize data, it is worthless. I am not sure what I am going to do with it now, except maybe hope that the manufacturer will send a new one. It is a piece of junk. Save your money or buy Lexar.
Rating:
Summary: Works great with Palm Tungsten E
Review: I bought this Sandisk 512MB SD card to play music in my Palm Tungsten E. I have had excellent results transferring music and playing music on this card. I haven't had one problem and would highly recommend it. It looks like I can store about 120 songs with an average encoding of 128kbps. So it's a bit expensive when compared to the capacity of an ipod, but I didn't want to carry around 2 devices, charge them, etc. The downsides are not really about this card at all. They are: 1. The Palm MP3 kit that comes with the fast transfer USB device doesn't work with the RealOne 10 sync function. It uses the slow USB cable that's used for HotSync. 2. The RealOne 10 doesn't transfer playlists from the desktop to the Palm. I downloaded the new Real Player 1.1 to my Palm but it doesn't have many new features. 3. The in-your-ear headphones that come with the Palm MP3 kit suck. They don't fit in my ear (I'm an average size 5'11" male), they fall out so the music doesn't sound great. I went to the Metreon and got the Sony foldable MDR-G72 headphones and I'm enjoying the music much, much more. This review is about more than just the Sandisk SD card, but I'll reiterate, the Sandisk card has worked flawlessly for me.
Rating: 
Summary: Very Slow!
Review: I have 3MP digital camera (Canon SD110) and with this card, too slow men! - The real capacity of this card is aprox. 480Mb.
I've tried other sd (lexar) and work fine. For Performance I recommend Lexar SD's.
Rating:
Summary: Works great for me, but if it doesn't for you, there is hope
Review: I have an Axim x5, which are notoriously incompatible with Sandisk SD cards, but this card has been working wonderfully for me (along with a newer 128mb card), even if the read speed isn't quite as fast as other brands. For some idea if others with your device have been having problems with Sandisk, take a look here: http://sdprob.aximsite.com/theproblemlist.htm (this site is heavily skewed toward Dell handhelds, for obvious reasons). If you do have issues, Sandisk is very good about replacing the card. Look at the info here for Tungsten t3: http://www.sandisk.com/tech/faq/224.html; and here for Axims: http://www.sandisk.com/tech/faq/216.html. Both will eventually take you to the same replacement request form, so I think you can use that form for any model. Good luck!
Rating:
Summary: Lost all files on this card
Review: I have an iPAQ h4150 with a 512 MB Sandisk SD card, one day I was synchronizing files and I lost all my files on the SD card. I formated the card and tried to copy new files on it but when I try to add files I got the error message "CARD IS FULL". I tried formatting the card using Fat16, Fat32 and it still doesn't work. This card is garbage! I bought a different brand of SD card and never had this problem again.
Rating:
Summary: Diskappointed
Review: I have used SanDisk Compact Flash Memory cards and had great results (Nikon 2MP digital camera and Cannon 3MP digital camera). This Secure Digital Card started showing errors from the beginning, and then got worse. Unable to use at all in my Coolpix 4800 after a couple weeks. Lost some great shots (I know they were great because I saw them in the viewer when I shot them) because of errors on this card. Glad I got the [...] but still feel like SanDisk ripped me off.
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