CREATE TABLE table_251 ("Comparisons" CLOB, "Hub Base Class" CLOB, "Emulated Class" CLOB, "Semi-DDM Class" CLOB, "DDM Class" CLOB)

Is wireless combo keyboard and mouse support part of the DDM class?
SELECT "DDM Class" FROM table_251 WHERE "Comparisons" = 'Wireless Combo keyboard and mouse support'
SELECT "DDM Class" FROM "table_251" WHERE "Comparisons" = 'Wireless Combo keyboard and mouse support'