[[File:Ndev-20.png|thumb|Image of a NDEV 2.0 showing the 4 wired Wii Remote ports; from [[Dev Tool]] V4 setup guide.]]
[[File:Ndev-20.png|thumb|Image of a NDEV 2.0 showing the 4 wired Wii Remote ports; from [[Dev Tool]] V4 setup guide.]]
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The difference between 1.x versions is unknown. The difference between 2.0 and "2.01(ES)" is also unknown; since ES (possibly "Engineering Sample") is the prefix for [[Hollywood]] revisions as seen in clkspeed.dol in [[RVL_DIAG]], this may indicate a Hollywood update in this version.
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The difference between 1.x versions is unknown. The difference between 2.0 and "2.01(ES)" is believed to be the addition of wireless functionality, as an official [[Revolution SDK]] document describing compatibility for various [[Wii Remote]] models states that wired controllers are intended for the 2.0 and wireless controllers are intended for the 2.01.<ref>https://pokeacer.xyz/wii/pdf/RVL-ControllerHardwareOverview.pdf</ref>