SDHC has a greater storage capacity (over 2GB), hence it's name, 'High Capacity'. SDHC is better, but it is more expensive.
Also, check that your camera supports SDHC (almost all of them do, but older ones don't.)
Yes. The camera will accept SD or SDHC cards.
No. It supports only SD cards up to 2Gb, not SDHC
SDHC Flash Cards are not compatible with SD Cards. But the SDXC supports the SDHC and the SD as well as the SDXC. Only the SD supports the SD and nothing else.
It's likely that your 4GB card is an "SDHC" card, and your camera is an older camera that was designed before the SDHC format came out. Although SDHC cards look exactly like standard SD cards, they are not. If your camera is a few years old, only SD cards of 2GB or less (standard SD cards) will work with your camera.But hang onto that 4GB card. One day you'll have a newer camera that will make good use of it.
SDHC memory cards are the advanced version of SD cards. Sd holds from 8 MB to 4GB of memory where as SDHC starts off at 4 GB and goes up. The data transfer rate is much higher with SDHC also but you have to make sure the digital camera accepts the card by looking in your manual before purchasing.
Assuming you mean the Canon Powershot A810 - It uses SDHC memory cards.
That would be the SDHC cards.
I have an acer 5100, and I have not been able to read sdhc cards with my sd reader.
The C743 works with MMC and SD cards, not with SDHC card
"It comes with an adapter" No - all the adapter does is makes it from a micro SD card into a (standard size) SD card.Not sure you can do anything to convert it from SDHC to SD as they physically address the memory differently. Your equipment has to be SDHC compatible to read/use them.* SD compatible equipment - Will read/write to SD cards but WILL NOT read/write SDHC cards* SDHC compatible equipment - Will read/write both SD and SDHC cards
it takes a sd for camera sdhc for camcorder
Yes, version 4.0 and higher of the wii operating system now support SDHC cards.