One Stop Systems (OSS) 8-K/A Financial Statements and Independent Auditors’ Report

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

One Stop Systems Inc.

Escondido, CA

We consent to the incorporation by reference in Registration Statement No. 333-227671 on Form S-8 of One Stop Systems, Inc. of our report dated 13 December 2018 with respect to the financial statements of Bressner Technology GmbH included in this current report on Form 8-K.

BDO AG Wirtschaftsprüfungsgesellschaft

/s/ Uwe Braunschläger	/s/ Frank Werner
Uwe Braunschläger	Frank Werner
Wirtschaftsprüfer, CPA	Wirtschaftsprüfer
(German Public Auditor)	(German Public Auditor)

Munich, Germany

13 December 2018