Just received my SM-PCE1 from Shimano. The computer interface unit that your LBS uses to diagnose problems with Di2. But it allows the new Di2 firmware to be installed onto your bike. Changes worth noting are now that you can change the speed of the front/rear derailleur gear change from ultra fast, fast, normal, slow, very slow and also enable multi-shift which can be set to a set number of gears or the complete cassette and is activated when holding down the shifter for more than a brief press. e.g. Set mine to whole cassette and can hold down shifter and it go through the cassette to the top or lowest gear. The unit is compatible with Di2 Ultegra and also Dura-ace (version 9070). Anyone who would like to borrow the unit is very welcome, you will need a laptop/computer running windows. If any RCC interested in borrowing the unit please e-mail me on dave.townsend@me.com