CREATE TABLE table_1153898_1 (ddm_class VARCHAR, comparisons VARCHAR)

Is wireless combo keyboard and mouse support part of the DDM class?
SELECT ddm_class FROM table_1153898_1 WHERE comparisons = "Wireless Combo keyboard and mouse support"
SELECT "ddm_class" FROM "table_1153898_1" WHERE "Wireless Combo keyboard and mouse support" = "comparisons"