Sony's DualShock 4 attachment adds extra buttons to the classic controller | TechSpot
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Sony adds extra buttons to the PS4 controller – Thumbsticks
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/cdn.vox-cdn.com/uploads/chorus_image/image/68793083/bking_200113_3868_0001.5.jpg "Sony is trying to patent its Back Button Attachment for the PlayStation 4 - The Verge")
Sony is trying to patent its Back Button Attachment for the PlayStation 4 - The Verge
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Sony files patent for new PlayStation controller with extra buttons - The Statesman
DualShock 4 Back Button Attachment review: A nice PS4 upgrade for $30 | Ars Technica
DualShock 4 Back Button Attachment review | TechRadar
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/cdn.vox-cdn.com/uploads/chorus_image/image/66101017/jbareham_200108_ply0989_ps4_controller_0124.0.jpg "DualShock 4 Back Button Attachment review - Polygon")
DualShock 4 Back Button Attachment review - Polygon
Sony Patents PlayStation Controller With Two Extra Buttons
PS4 DualShock 4 Back Button Attachment review
DualShock 4 Back Button Attachment review: A nice PS4 upgrade for $30 | Ars Technica
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PlayStation 4 DualShock finally has cost-friendly back buttons: Review | Mashable
Dualshock®4 Back Button Attachment GameStop Ireland
The DualShock 4 Back Button Attachment gives you extra buttons for your PS4 controller - KLGadgetGuy
Amazon.com: DualShock 4 Back Button Attachment - PlayStation 4 : Video Games
PS4 Controller Programmable Back Button Attachment Announced by Sony
DUALSHOCK 4 Back Button Attachment | Hardware and Accessories | PlayStation (US)
