WESTLAKE VILLAGE, Calif.--(BUSINESS WIRE)--Qualstar® Corporation (NASDAQ: QBAK), a manufacturer of data storage solutions and high-efficiency power supplies, today reported financial results for the fourth quarter and the fiscal year ended June 30, 2015. Fiscal 2015 Fourth Quarter Financial Results Revenues for the quarter ended June 30, 2015 were $3.2 million, compared with $2.7 million for the quarter ended June 30, 2014, an increase of $0.5 million or 18.5%. Loss from operations was $0.3 mil