Flash card compatibility

I currently am using the Ultra Compact Flash type 1 30mb/s 4 & 8 GB and also the Ultra II 15mb/s 4 GB. I have an Olympus E 510 DSLR… Is the Extreme  CompactFlash type 1 compatible?

the extreme will work but you will not see a benifeit of the faster speed. the 30MB/s card is likely faster than your camera can perform so you probably do not need anything faster.