GraphicsDeviceCapabilities.AddressCaps structure

As per MSDN documentation,

Represents the texture addressing capabilities for Texture structures

There are 6 capabilities for this structure, as follows

Property	OpenGL Extension or Minimum Version	Notes
SupportsBorder	GL_ARB_texture_border_clamp	Gets a value indicating whether the device supports the setting of coordinates outside the range [0.0, 1.0] to the border color.
SupportsClamp	GL_EXT_texture_edge_clamp	Gets a value indicating whether the device supports the clamping of textures to addresses.
SupportsIndependentUV	Unknown	Gets a value indicating whether the device can separate the texture-addressing modes of the texture's u and v coordinates.
SupportsMirror	GL_EXT_texture_mirror_clamp	Gets a value indicating whether a device can mirror textures to addresses.
SupportsMirrorOnce	GL_EXT_texture_mirror_clamp + GL_ATI_texture_mirror_once	Gets a value indicating whether a device can take the absolute value of the texture coordinate (thus, mirroring around 0) and then clamp to the maximum value.
SupportsWrap	Unknown	Gets a value indicating whether a device can wrap textures to addresses.

If these are not correct or you can help fill in the blanks, comments are welcome.