The B & H photo and electronics equipment store has agreed to pay $4.3 million to settle a discrimination case, the federal Equal Employment Opportunity Commission said yesterday. The commission, which enforces laws prohibiting discrimination, alleged that the company paid Hispanic employees in its warehouses less than other workers and failed to promote them or provide health benefits. In its complaint, filed in Federal District Court, the commission said the discrimination was based on the employees’ nationalities. Under the agreement, B & H agreed to equalize the wages of its Hispanic employees to those of non-Hispanic workers and to distribute $4.3 million to workers who were paid less, not promoted, or denied benefits because they are Hispanic.