CF 4GB MEMORY CARD for Canon EOS-10D / EOS-1D / EOS-1D Mark II / EOS-1D Mark II N / EOS-1D Mark III

• Capacity: 4GB
• Type: Compact Flash (CF) Memory Card
• For Digital Cameras / Handheld / Laptops

It worked perfectly right out of the box. So far I have done two shoots with it and have had not a single problem. For the price I paid, I'm very pleased. My Canon EOS1D MarkII is an older camera and takes these slower cards, but I don't notice the slow speed at all. I never have to wait to take the next shot even when shooting RAW.