One Stop Systems Investor Presentation — March 2020

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Corporate Presentation

Nasdaq: OSSImportant Disclaimers & Cautions Regarding

Forward -Looking Statements

2One Stop Systems cautions you that statements in this presentation that are not a description of historical facts are forward -looking statements. These statements

are based on the company's current beliefs and expectations. Such forward -looking statements include those regarding the company ’s 2019 financial outlook and

expectations for 2019 revenue growth generated by new products, design wins or M&A activity. The inclusion of such forward -looki ng statements and others

should not be regarded as a representation by OSS that any of its plans will be achieved.

Actual results may differ from those set forth in this presentation due to the risks and uncertainties inherent in our busine ss,including, without limitation, that the

market for our products is developing and may not develop as we expect; our operating results may fluctuate significantly, wh ichwould make our future operating

results difficult to predict and could cause our operating results to fall below expectations or our guidance; our products a re subject to competition, including

competition from the customers to whom we sell, and competitive pressures from new and existing companies may harm our busine ss,sales, growth rates, and

market share; our future success depends on our ability to develop and successfully introduce new and enhanced products that mee t the needs of our customers;

our products fulfill specialized needs and functions within the technology industry and such needs or functions may become un necessary or the characteristics of

such needs and functions may shift in such a way as to cause our products to no longer fulfill such needs or functions; new e ntrants into our market may harm our

competitive position; we rely on a limited number of suppliers to support our manufacturing and design process; if we cannot protect our proprietary design rights

and intellectual property rights, our competitive position could be harmed or we could incur significant expenses to enforce ourrights; our international sales and

operations subject us to additional risks that can adversely affect our operating results and financial condition; if we fail toremedy material weaknesses in our

internal controls over financial reporting, we may not be able to accurately report our financial results; and other risks de scribed in our prior press releases and in

our filings with the Securities and Exchange Commission (SEC), including under the heading "Risk Factors" in our Annual Repor t on Form 10 -K and any subsequent

filings with the SEC.