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https://www.skooterblog.com/2013/05/13/ebay-adaptador-para-conectar-dois-joysticks-de-atari-2600-no-pc-via-usb-new-dual-port-pc-computer-usb-port-controller-adapter-for-atari-2600-joystick/
eBay: Adaptador para conectar dois Joysticks de Atari 2600 no PC via USB (NEW Dual Port PC Computer USB Port Controller Adapter for ATARI 2600 JOYSTICK)