SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 Name of Issuer Black Box Corporation Title of Class of Securities common CUSIP Number 091826107 Date of Event Which Requires Filing this Statement 12/31/04 #1 Alex. Brown Investment Management, LLC 52-1349876 #4 Maryland #5 0 #6 0 #7 0 #8 0 #9 0 #11 0% #12 PN IA Item 1. (a) Black Box Corporation (b) 1000 Park Drive Lawrence, PA 15055 Item 2. (a) Alex. Brown Investment Management, LLC and a registered investment advisor. (b) 217 E. Redwood Street, #1400 Baltimore, MD 21202 (c) The firm is organized under the laws of Maryland. (d) common (e) 091826107 Item 3. (a) (b) (c) (d) X (e) (f) (g) (h) CUSIP Number 091826107 Item 4. (a) 0 shares of common stock (b) 0% (c) (i) 0 shares (ii) 0 shares (iii) 0 shares (iv) 0 shares Item 5. X Item 6. Not Applicable Item 7. Not Applicable Item 8. Not Applicable Item 9. Not applicable Item 10. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purpose or effect. Signature: After reasonable inquiry and to the best of my knowledge and belief, I certify that information set forth in this statement is true, complete and correct. ALEX. BROWN INVESTMENT MANAGEMENT,LLC By: Lee S. Owen Co-President Date: February 15,2005