When connecting Nexus 7 to Lenovo X220* laptop via USB:
- I get about 3-4MBs when writing to the Nexus 7.
- The files being written were large video files, smaller file transfer (like music/mp3s files) copied at about 2-3MBs…
- I get closer to 7-8MBs when copying from the Nexus 7 to the laptop.
NOTE: The X220 was running Windows 7 in these tests.