There should be a setting showing the DPI, or Text, Text and Picture, Picture etc. in the Software Control Panel.
Also check your driver click here does it need updating?
And this from a write up:-
The 36-bit, 600 by 2,400-dpi scanner proved fine for making copies of family photos or magazine articles, though we wouldn't rely on it for detailed artistic work. (Actually, we thought scans looked cleaner when set for 300 rather than 600 dpi; software interpolation offers faux resolution up to 19,200 dpi.)