Hi
This is for those who have gamepads that has xbox buttons but are not original xbox gamepads and use directx. whith xce360ce you can emulate this gamepads as xbox ones and play in game with xbox buttons.
You have to download the version x360ce_lib64_r848_VS2010
The open x360ce.gdb with text editor and add this lines below nba 2k14 settings:
[NBA2K15.exe]
Name = NBA 2k15
HookMask = 0x00000002
Save it, and the you can use your gamepad with xbox buttons in game