從海外網站看到的消息，想在PS4版快打4上面使用PS3搖桿的人，我自己是還沒試過，但按照英文翻譯了一下，如果有誤請見諒。
請按照下面的指示:
一個玩家時:
1．開啟PS4電源。
2．使用PS4的控制器登入一個帳號或是登入訪客帳號(例:user1)。
3．進入USF4遊戲內。
4．當遊戲讀取完成後，將PS3搖桿接上USB接口，這時搖桿應該就可以使用了。
★注意: 登入帳號的PS4控制器和PS3搖桿會"同時"擁有操作。 另外PS4控制器必須保持登入帳號，如果PS4控制器因為沒電而登出的話，PS3搖桿也會失效。
二個玩家時:
1．開啟PS4電源。
2．使用PS4的控制器登入一個帳號或是登入訪客帳號(例:user1)。
3．進入USF4遊戲內。
4．當遊戲讀取完成後，玩家1應該將PS4控制器將USB介面拔出，將PS3搖桿接上USB接口，這時玩家1搖桿應該就可以使用了。
5．玩家1進入Versus Mode(對戰模式)。
6．進入角色選擇畫面之後，玩家2要登入一個帳號，然後按下"Options"按鈕，此時玩家2應該可以自由控制游標了。
7．玩家2將PS4控制器的USB介面拔出，再將PS3搖桿接上USB接口，這時玩家2的搖桿應該可以使用了。
★注意: 登入帳號的PS4控制器和PS3搖桿會"同時"擁有操作。 另外PS4控制器必須保持登入帳號，如果PS4控制器因為沒電之類的原因而登出的話，PS3搖桿也會失效。
另外，推特己經有人證實，Touch Pad(觸控板)可以用來模仿之前的Back鈕，作為刷輕拳的按鈕。
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For who wants to use PS3 stick on PS4 USF4, follow the steps below:
For one player:
– Power up the PS4.
– Use a PS4 controller to sign into an account or the guest account.
– Load up USFIV.
– Once the game is loaded, plug the PS3 stick of your choice into the other USB slot and the stick should now function.
– Please note that:
the PS4 controller will also control the character even though the PS3 stick is plugged in.
the PS4 controller used to sign in must remain synched to the PS4. If it loses power or connectivity, the joystick will become deactivated.
For two players:
– Power up the PS4.
– Use a PS4 controller to sign into an account or the guest account.
– Load up USFIV.
– Once the game has loaded, player 1 should unplug the PS4 controller, yet ensure that it remains synched and plug in a PS3 stick of choice into one of the vacant USB slots. It should now function.
– Player 1 should head to versus mode.
– Once at the selection screen, Player 2 will then have to sign into another account or a guest account.
– Once signed in, Player 2 should then press the “option” button to join versus mode.
– Player 2 should now be able to move around the selection screen.
– Once this is completed, player 2 should unplug in the PS4 controller, yet ensure that it remains synched and plug in a PS3 stick of choice into one of the vacant USB slots. The stick should now function.
– Please note that:
the PS4 controllers will also control the characters even though the PS3 sticks are plugged in.
the PS4 controllers used to sign in must remain synched to the PS4. If either loses power or connectivity, the corresponding joystick will become deactivated.
