Card sdhc error - Acer CE-5330 Digital Camera

Are your computer's card reader and camera compatible with SDHC cards or only with SD cards? While SDHC cards will fit into SD devices, they are electronically incompatible and will not work in devices not designed for SDHC cards.

There are several possible causes for "memory card locked", "memory card error", or "no memory card". The most common cause is having the tiny slide switch on the side of the card in the wrong position. The second most common is trying to use a 4GB or higher SDHC card with an older camera made before SDHC format came out. There are also other common causes if the above didn't help, with troubleshooting steps for this problem listed here.

I've checked out your Canon Powershot SD550, and this previously written answer definitely applies to you, Wendy:

The problem is that your camera is only compatible with SD cards, not SDHC cards. You bought a larger card for your older camera, not noticing that it was SDHC (or not knowing that it mattered). The new card doesn't work, not because it or the camera is broken, but because it's not compatible.

Cards up to 2Gb are generally SD.
Cards of 4Gb are generally SDHC.
Cards over 8Gb have to be SDHC.

(There are exceptions. Sometimes, manufacturers make 4Gb SDHC cards but some have errors; they disable half of the chip and sell it as 2Gb, but it's still SDHC. 4Gb cards are almost always SDHC because they're cheaper, but 4Gb SD cards do exist. They are so rare that I've even seen a guru on this site claim they don't. I did own one once, but it was very expensive and turned out to be so unreliable that I had to return it. I don't recommend looking for one, because of the problems.)

Your solution is to go find a 2Gb card, and be extra sure that it doesn't say "SDHC" on it.

The problem is that your printer is only compatible with SD cards, not SDHC cards. You bought a larger card for your camera, not noticing that it was SDHC (or not knowing that it wouldn't work in the printer). The new card doesn't work, not because it or the printer is broken, but because it's not compatible.

Cards up to 2Gb are generally SD.
Cards of 4Gb are generally SDHC.
Cards over 8Gb have to be SDHC.

(There are exceptions. Sometimes, manufacturers make 4Gb SDHC cards but some have errors; they disable half of the chip and sell it as 2Gb, but it's still SDHC. 4Gb cards are almost always SDHC because they're cheaper, but 4Gb SD cards do exist. They are so rare that I've even seen a guru on this site claim they don't. I did own one once, but it was very expensive and turned out to be so unreliable that I had to return it. I don't recommend looking for one, because of the problems.)

Your solution is to limit yourself to a 2Gb card, (and be extra sure that it doesn't say "SDHC" on it) or to find a different way to get the photos to the printer.

The problem is that your camera is only compatible with SD cards, not SDHC cards. You bought a larger card for your older camera, not noticing that it was SDHC (or not knowing that it mattered). The new card doesn't work, not because it or the camera is broken, but because it's not compatible.

Cards up to 2Gb are generally SD.
Cards of 4Gb are generally SDHC.
Cards over 8Gb have to be SDHC.

(There are exceptions. Sometimes, manufacturers make 4Gb SDHC cards but some have errors; they disable half of the chip and sell it as 2Gb, but it's still SDHC. 4Gb cards are almost always SDHC because they're cheaper, but 4Gb SD cards do exist. They are so rare that I've even seen a guru on this site claim they don't. I did own one once, but it was very expensive and turned out to be so unreliable that I had to return it. I don't recommend looking for one, because of the problems.)

Your solution is to go find a 2Gb card, and be extra sure that it doesn't say "SDHC" on it.

There are no 4GB SD cards. Any card that size is actually a SDHC (High Capacity) card. SD and SDHC cards fit the same slots, but many cameras won't work with the SDHC cards. SDHC is not backwards compatible.

The specs for your camera say that an SDHC card up to 8GB may be used....not 32GB!

the a 620 only goes up to 2 gb no higher

Sorry for the extreme delay in answering your question: I've been trawling for old unanswered questions today and yours came up. The following answer will undoubtedly be way too late to be of use to you, but may assist others searching FixYa for an answer to the same problem.

You have been mistaking SD cards for SDHC cards. They look the same but are different, and your camera cannot use SDHC cards as it was designed before they existed. The limitation is due to the hardware in your camera so it cannot be updated to SDHC standards.

Your 2GB card was definitely an SD card as SDHC cards have a minimum capacity of 4GB, and 2GB SD cards are the maximum capacity which your camera can handle. Your only fix is to either stick to 2GB maximum capacity SD cards or to replace the camera with one which is SDHC compatible.

I have been rummaging around trying to find two solutions: 1) to get my Toshiba Satellite card reader to read SDHC cards and 2) to get my desktop USB ports to read SDHC cards. While MS offers a hotfix for XP, it does not always work because of the different Chip Sets in computers. I have also read where posters say that the SDHC card works in the compter NOW, but NOW will not work in the camera... and the SDHC card NOW works in the camera but will NOT work in the computer.... I found a tekkie article that may help clear the air... SDHC cards are formatted in Fat32x (NOTICE the "x") and SD cards are formatted in Fat32 (no 'x') and these compatibility problems arise when the user unwittingly or unknowingly RE-formats the SDHC card, either when it is put in the computer and won't read or when it is put in the camera and won't read... but just don't bother to mention that THAT is what they did upon inserting the card and only proceeded to complain about an apparent incompatibility. The camera or computer might even mislead you asking if you want to format the card..... but all is not lost. The Panasonic site gives a program AND a pdf instruction book on How To ReFormat an SD or SDHC card specifying the proper Fat32x or Fat32 format. Hope this helps.