It has 802.11g, which would theoretically give you 54 Mbps. In the real world, you will never see anything approaching those speeds. 20ish Mbps is pretty much it for g. N might get you closer to 40Mbps. Maybe. If you don't have any bluetooth devices, cordless phones, or microwave ovens nearby or you are running a 5ghz N network (which you aren't), you might get upwards of 60 or 70. Add more than one wireless device and it'll get even worse. If you are wanting to transfer big files without waiting around forever, I highly suggest either using the USB cable or putting the SD cards in a card reader. I don't know what throughput the n800 is capable of, but I can't imagine it's all that great.