The 51Degrees Detector for .NET overwrites several default properties from the Request.Browser. This allows other ASP.NET components to take  advantage of enhanced device data without any modification.

.NET Property	51Degrees Property
IsMobileDevice	IsMobile
MobileDeviceManufacturer	HardwareVendor
MobileDeviceModel	HardwareModel
Platform	PlatformName
Browser	BrowserName (this will not be overwritten if the Detector was compiled with REMOVE_OVERRIDE_BROWSER flag)
Crawler	IsCrawler
MajorVersion	Derived from BrowserVersion
MinorVersion	Derived from BrowserVersion
Version	Derived from BrowserVersion
JavaScript	Javascript
EcmaScriptVersion	derived from Javascript
JscriptVersion	JavascriptVersion
SupportsCallback	True if AjaxRequestType does not equal NotSupported
ScreenPixelsHeight	ScreenPixelsHeight
ScreenPixelsWidth	ScreenPixelsWidth
ScreenBitDepth	BitsPerPixel
PreferredImageMime	is set to "image/png", "image/jpeg" or "image/gif", in that order, depending on image mimes CcppAccept says is supported.
IsColor	True if BitsPerPixel is greater than 4.
CanInitiateVoiceCall	IsMobile
Cookies	CookiesCapable