PRO: Tested at almost 86.5/91.3 MB with a USB 3 card reader. It's pretty good. Con: Card Reader is a joke totaling 28/21.8 MB. There must be a USB 1 or USB 2 memory card reader that also gives you a faster write speed than a read speed. this is not normal and is a wake up call for me. I don't trust him or the seller to include it with a bunch of fast cards. I will never buy from this seller again.