Features list taken from StoneAgeGamer
Features:
  • NES, Famicom, and Twin Famicom systems are supported.* Many NES/FC clones supported as well.
  • Cart supports NES and FDS ROM images.
  • Automatic disk side swap for FDS.
  • Expansion audio.**
  • Game Genie cheat code support.
  • Automatically backs-up saves to SD card. There is no need to push reset before shutting down the system.†
  • Mapper support can be extended via software updates. As easy as loading new mappers files on SD card.
  • FAT / FAT16 / FAT32 file system formats are supported.
  • Supports SD (SD & SDHC) cards up to 32GB.
  • Quick loading of game files (approx. 4-8 seconds).
EverDrive-N8 hardware:
  • Powerful Cyclone II FPGA.
  • 2 x 512Kbyte SRAM for PRG and CHR data.
  • 128Kbyte battery backed memory. It write save data to SD.
  • Max II CPLD to handle FPGA reconfiguration, BIOS, SD and USB interfaces.
  • 1Mbyte flash BIOS.
  • Voltage shift buffers on PPU and CPU bus for matching levels between 5v NES bus and 3.3 EverDrive bus. Far better than simple resistor buffers at reducing noise and power consumption.