yes, you need a card reader if you are using them on a device that does not have a port for them. the MPOWER has a port for an SD card a Compact flash card and one for a card reader. You do need the card reader to attach to your desk top. Bertha ----- Original Message ----- From: Pat Ferguson To: bookshare-discuss@xxxxxxxxxxxxx Sent: Saturday, March 24, 2007 9:42 AM Subject: [bookshare-discuss] Re: sd cards I've put my books on SD cards a lot, and no it really doesn't matter what brand you use. All they are is a storage device. Now, you will need a card reader though? Then you will also need a device that you can put them in to use them. Pat Ferguson At 06:52 AM 3/23/2007, you wrote: Hello Rita, I use compact flash cards. But as with the SD cards it depends on the size of the card and of the books. Bertha ----- Original Message ----- From: rita weyler To: bookshare-discuss@xxxxxxxxxxxxx Sent: Thursday, March 22, 2007 8:30 PM Subject: [bookshare-discuss] sd cards hello all Does anyone put their books on sd cards? I love those little critters and was wondering about how many books one might hold. Rita