Nope, the Transcend 4GB is a "standard" SD card.
Since the SD card design specs don't include 4GB,
Transcend and others that make 4GB cards are out
of spec. This explains why we see messages like
"4GB SD card from vendor X worked, but vendor Y's
card did not." They implement support for 4GB in
different ways.
We're in a transition period from SD to SDHC. It
won't be long before recorders and digital cameras
will switch to SDHC. Some video camcorders have
already made the switch (goodbye Mini-DV).
Flintstone