0000950152-99-001799 S-3 4 19990310 PIONEER STANDARD ELECTRONICS INC 0000078749 5065 340907152 OH 0331 S-3 33 333-74225 99562561 4800 E 131ST ST CLEVELAND OH 44105 2165873600 4800 E 131ST ST CLEVELAND OH 44105 S-3 1 000095015299001799-001-seq1-s-3.txt PIONEER-STANDARD ELECTRONICS, INC. S-3 EX-4.5 2 000095015299001799-002-seq2-ex-4-5.txt EXHIBIT 4.5 EX-5.1 3 000095015299001799-003-seq3-ex-5-1.txt EXHIBIT 5.1 EX-23.1 4 000095015299001799-004-seq4-ex-23-1.txt EXHIBIT 23.1