X0202 4 2007-04-30 0 0001086745 WPCS INTERNATIONAL INC WPCS 0001044321 MARXE AUSTIN W & GREENHOUSE DAVID M C/O SPECIAL SITUATIONS FUNDS 527 MADISON AVENUE, SUITE 2600 NEW YORK NY 10022 0 0 1 0 Common Stock 2007-04-30 4 S 0 16467 13.3745 D 15767114 I By Limited Partnerships This is a joint filing by Austin W. Marxe (Marxe) and David M. Greenhouse (Greenhouse). They share voting and investment control over all securities owned by Special Situations Fund III QP, L.P. (QP) Special Situations Cayman Fund, L.P. (Cay) and Special Situations Private Equity Fund, L.P. (PE). 772,264 shares of Common Stock and 8,044,829 Warrants to purchase 670,402 shares of Common Stock are held by QP, 175,386 shares of Common Stock are held by Cay and 524,635 shares of Common Stock and 6,250,000 Warrants to purchase 520,831 shares of Common Stock are held by PE. The interest of Marxe and Greenhouse in the shares of Common Stock and Warrants owned by QP, Cay and PE is limited to the extent of his pecuniary interest. Austin W. Marxe 2007-05-02 David M. Greenhouse 2007-05-02