SD Media card not recognized by card reader?

[h linamen]

Is it possible that a two year old card reader won't recognize a 4GB or larger SD media card? It works fine for my 2 GB cards.

[bhaveshp]

Yes, very likely as a 4 GB or larger SD card is actually SDHC - SD High Capacity. Older card readers are usually not compatible with SDHC cards.

[Mike V]

Yeah, heaps of currently on sale SD card readers don't read SDHC.