In Quinnipiac's poll, Trump gets 3 percent of the black vote. In Fox's, 10 percent. In CNN/ORC's, Trump gets 24 percent of the vote -- among all non-white voters (Hispanics, for instance, lean Democratic but not nearly as much as African Americans). That poll is also about a month older than SurveyUSA's. SurveyUSA is something of an outlier on this question, showing much more support for Trump among black voters than Quinnipiac or CNN.
Notice too that SurveyUSA has a much higher percentage of people who said that they didn't know how they would vote -- in other words, there's a lot of empty space between the bars showing support for Trump and Clinton and 100 percent of respondents. This is likely a function of the methodology used by SurveyUSA.