Reflex CTRL Original Controller USB Conversion Kits

Reflex CTRL Original Controller USB Conversion Kits

MiSTer Addons
Regular price $25.00
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Elevate your classic gamepads to USB capabilities with Reflex CTRL! Boasting the quickest response times of any USB controller available commercially, Reflex CTRL all but eliminates dropped inputs. Featuring the highly versatile, upgradeable, and customizable GP2040-CE firmware, your gaming will never be the same!

How it works:

CTRL boards are PCB replacements with a short USB-C female pigtail cable. Unscrew your controller, remove the OEM circuit board, optionally replace the rubber membranes (coming in 2024?), fit the Reflex CTRL PCB, route the USB-C Female cable, and re-assemble the controller. Users provide their own USB-C cables 


  • Circuit Board

  • USB-C Female cable (50mm)
  • NOT INCLUDED: USB-C to USB-A cable for connecting to target device. USB-C to USB-C cables are not supported.


  • Open-source, powered by the amazing GP2040-CE

  • 0.8 ms latency
  • Carbon-coated button pads (just like OEM) for consistency and durability
  • Short USB-C female cable protrudes from the controller so you can use your preferred USB cable
  • ESD protection for all inputs
  • Update firmware: Select + Start + Up while plugging in USB
D-pad Mode SNES
D-pad Select + Start + ↓
Left Analog Select + Start + ←
Right Analog Select + Start + →


  •  To change controller modes, hold the following button while plugging in USB
Controller Mode SNES
XInput A
Switch B
Direct Input/PS3 Y
PS4* X
    • *(requires user-provided keys): Hold X while plugging in USB
  • Built-in turbo (enable in web GUI):

Turbo Function SNES
Enable/Disable Button
← + Select + Button
Increase Rate*
← + ↑ + Select
Decrease Rate*
← + 
↓ + Select
    • * Turbo rate is global and applies to all buttons with turbo enabled
  • Web GUI for deep customization
    • Hold Start while plugging in USB
    • Open web browser and navigate to 192 dot 168 dot 7 dot 1



NES cable doesn’t route through the cable guide posts. The cable goes straight through the opening. It takes a little work to get the controller shell seated properly.



Customer Reviews

Based on 11 reviews
Probably the best way to use an SNES controller over USB

Its an easy installation and works great. I confused myself a little on the initial firmware setup but it's been very easy since then. Being able to switch between Xinput/Dinput/Switch modes very easily is very convenient and I like the design with the short connector cord, pairs well with the braided USB A to C cables sold here. Eagerly awaiting the Genesis version.

Ben Dawkins
An exciting reflex product!

This conversion kit is the real deal. Installation on one of my spare Super Famicom controllers took no time, and it worked right out of the gate with the MiSTer, no fiddling required. I know there is a miniscule difference compared with SNAC/SNAX, but I honestly can't tell. The feel of an original controller with the ability to engage with MiSTer's OSD is pretty great. I can't wait for other Reflex CTRL devices to be developed and released!

Virgilio Alvarez
SNES and beyond.

Love the product. The SNES Ctrl is well constructed and works as intended. Would highly recommend to anyone who loves their SNES controllers and wants to use them with multiple systems.

Easy swap, works great 👍

I had a broken Super Famicom controller in my parts bin. The swap to the reflex was pretty simple. I had to fiddle quite a bit with the shoulder buttons/membranes, but that's more to do with Nintendo's design than the Reflex. Once I got it back together I plugged it into my Mister and it worked first try with no firmware update. I haven't tried it with other consoles, but for Mister, this is perfect. Looking forward to the Sega versions.

Nathaniel Lane
Great Board

Love this thing! Easy to install and works well.