EXHIBIT 31.2 CERTIFICATIONS I, James W. Kerrigan, certify that: 1. I have reviewed this amendment number 1 to the quarterly report on Form 10-Q/A of Lantronix, Inc.; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report; Date: September 14, 2005 /S/ JAMES W. KERRIGAN ---------------------------- James W. Kerrigan Chief Financial Officer