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	Other R4 versions	R4-SDHC
Intelligence	Unable to recognise or display SD type, capacity or format.	Able to recognise and display SD type, capacity and format.
Power Saving	No power saving function, more wastage	With sleeping mode function, to extend standby time.
Operation Interface	With inflexible operation interface.	Multi-language setting, simple and easy-operated interface.
Storage Capacity	No SDHC support, storage capacity capped at 2GB. Require a high-speed card to function properly.	Supports up to 32GB of storage capacity with SDHC cards with enhanced performance even on slower cards.
Compatibility of the game	The Support for R4 card is terminated as the team has been dismissed. games released after that is like to be problematic.	A capable R4i team commit themselves to the website maintenance and kernel updates, R4-SDHC & R4i-SDHC cards are compatible to all NDS games.
Flexibility	The option is set for all game. You can't set option for single one.	R4-SDHC&R4i-SDHC supports cheatcode and soft-reset setting on a per-game basis, avoiding possible conflicts.
Cheat code	The cheatcode mechanism of R4 was proved to be hard to use for, to the point that prevented many users to use the function properly.	The new UI is designed to be easy to use, ensuring smooth gaming experience even for new users.
Multimedia engine	The built-in Moohshell 1.61 lacks the new decoding engine present in the newer versions that provides faster decoding and clearer video. It is also more buggy.	With the latest Moonshell 2.0 built in the card, R4-SDHC&R4i-SDHC delivers a better multimedia experience with higher decoding performance and better picture quality.
Card Mould	The less accurate manufacturing process of the R4 makes it doesn't fit well with the SLOT-1. Sometimes it can cause freeze and other reliability problems.	The improved manufacturing process of R4-SDHC&R4i-SDHC ensures a minimal error in size and shape. The card thickness and area of gold-finger is specifically controlled with a error range of less than 0.1mm compared to an original NDS game card.

- 3rd generation storage device (no booting tool required)
- Flush fitting slot 1 card
- Uses MicroSD card, FAT16 or 32
- Supports any MicroSD card speed with no lag in game
- Supports Clean ROM, drag and drop. Works on any OS
- Built in NoPass
- Automatically detect save type
- Save directly to MicroSD card, not to onboard chip
- Supports Moonshell and other homebrew. Open I/O interface
- User friendly skinnable interface. Touchscreen or button operation
- Supports rumble pak and memory pak
- Supports the WiFi game, DS Rumble Pak, DS Browser
- Supports changes of the background of Operation Interface
- Support Skin DIY by setting background and font colors on Main Menu and Game Menu manually and automatically
- Supports 4-scale-lightness adjustment ( DS Lite only )
- Supports the Soft Reset.
- Supports Action Replay cheat
- moonshell 1.6 support Software Reset function( Press START key back to the R4 menu)