Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement onForm S-3 of One Stop Systems, Inc. (the “Company”) of our report dated March 21, 2019, relating to our audits of the Company’s consolidated financial statements as of December 31, 2018 and 2017, and for each of the years ended December 31, 2018 and 2017, included in the Company’s Annual Report onForm 10-K for the year ended December 31, 2018. We also consent to the reference to us under the heading “Experts” in this Registration Statement.
/s/ HASKELL & WHITE LLP
Irvine, California
May 10, 2019