Shimano XT rd-m786 cage

I am trying to find out if I have a long cage or a medium cage. I cannot find anything that specs the size measurements though. It is about 9.8mm between jockey wheels center to center. It is used on a 10 speed 11-36 cassette. Thanks for your help!
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9.8cm?
http://www.fibre-lyte.co.uk/fl/fl_cycle ... _mech.html
Suggests its long cage (on older versions that is called super long as they had short, long and super long).
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