SNES Classic controllers work with NES Classic, and vice versa - Polygon
Replacement Wired Controller for New Super Nintendo NES/SNES Classic Edition Mini 2017, Classic Game Controller
SNES Controller - Hardware - Nintendo - Nintendo Official Site
Werleo 2-Pack 2.4GHz Wireless Controller for SNES Classic Edition Rechargeable SNES Mini Wireless Gamepad with Retro USB Receiver for Super NES Classic Edition - Newegg.com