I received a derailleur that is NOT compatible with shimano shifter as described! I suppose, it's compatible with Sram only. My shifter is MicroShift R9 - shimano standard. The shifting is not crisp and the biggest sprocket (lowest gear)on which chain could be shifted is 3rd. Waste of time and money. I got half refund.
I order A5 for 9 speed. but, arrived A7. useless....