American Power Conversion Corporation - Principal Subsidiaries

Principal Subsidiaries

APC America, Inc.; APC Sales & Service Corporation; Systems Enhancement Corporation; APC DC Network Solutions Inc.: American Power Conversion Europe S.A.R.L. (France); American Power Conversion Corporation (A.P.C.) B.V.; APC Distribution Limited (Ireland); APC Deutschland GmbH (Germany); American Power Conversion UK Ltd.; American Power Conversion Sweden AB; APC Australia Pty. Limited; American Power Conversion Portugal, Ltda.; American Power Conversion Spain S.L.; American Power Conversion Italia S.R.L. (Italy); APC Korea Corporation; American Power Conversion Hong Kong Limited; American Power Conversion (Phils.) Inc. (Philippines); APC Japan, Inc.; American Power Conversion Brasil Ltda. (Brazil).