My Twin Usb Gamepad only detected 1 Controller joystick not 2

i have twin usb gamepad ( Pict : https://ph-live-02.slatic.net/p/2/twin-d...c24d21.jpg)
. and that controller only detected one. not two controller (check the picture). i try using Xbox 360 Controller emulator. but Rpcs3 not detected  that. 
i am using Rpcs3 v0.0.3-3-6a54b39 Alpha