Datasheet on Opsero Docshttps://docs.opsero.com/op073/datasheet/Recent content in Datasheet on Opsero DocsHugoenCopyright (c) 2026 Opsero Electronic Design Inc.Mon, 23 Feb 2026 00:00:00 -0500Overviewhttps://docs.opsero.com/op073/datasheet/overview/Mon, 23 Feb 2026 00:00:00 -0500https://docs.opsero.com/op073/datasheet/overview/<h2 id="description">Description</h2> <p>M.2 M-key Stack FMC is an adapter that allows 2x M.2 M-key PCIe modules to be connected to FPGA and MPSoC based development boards. The adapter uses the FPGA Mezzanine Card (FMC) form factor for connection with FPGA and MPSoC development boards via the FMC connector. It has 2x M-key M.2 sockets and can carry M.2 M-key PCIe modules of length 30mm and 42mm without extension, and 60mm, 80mm or 110mm with extension. Each M.2 slot has its own independent connection to the FPGA for maximum throughput and can support a 4-lane PCIe connection up to Gen4.</p>Pin Configurationhttps://docs.opsero.com/op073/datasheet/pin-configuration/Mon, 23 Feb 2026 00:00:00 -0500https://docs.opsero.com/op073/datasheet/pin-configuration/<h2 id="pinout-table">Pinout table</h2> <p>The M.2 M-key Stack FMC has a high pin count FPGA Mezzanine Card (FMC) connector, providing the connections to the FPGA on the development board. The following table defines the pinout of the FMC connector and describes each pin&rsquo;s purpose on this mezzanine card.</p>Specificationshttps://docs.opsero.com/op073/datasheet/specifications/Mon, 23 Feb 2026 00:00:00 -0500https://docs.opsero.com/op073/datasheet/specifications/<h2 id="recommended-operating-conditions">Recommended Operating Conditions</h2> <table> <thead> <tr> <th>SUPPLY VOLTAGE</th> <th>MIN</th> <th>TYP</th> <th>MAX</th> <th>UNIT</th> </tr> </thead> <tbody> <tr> <td>12 VDC</td> <td>+11.4</td> <td>+12</td> <td>+12.6</td> <td>V</td> </tr> <tr> <td>3.3 VDC</td> <td>+3.14</td> <td>+3.3</td> <td>+3.46</td> <td>V</td> </tr> <tr> <td>VADJ (1.2VDC)</td> <td>+1.14</td> <td>+1.2</td> <td>+1.26</td> <td>V</td> </tr> <tr> <td>VADJ (1.5VDC)</td> <td>+1.425</td> <td>+1.5</td> <td>+1.575</td> <td>V</td> </tr> <tr> <td>VADJ (1.8VDC)</td> <td>+1.71</td> <td>+1.8</td> <td>+1.89</td> <td>V</td> </tr> <tr> <td>VADJ (2.5VDC)</td> <td>+2.375</td> <td>+2.5</td> <td>+2.625</td> <td>V</td> </tr> <tr> <td>VADJ (3.3VDC)</td> <td>+3.135</td> <td>+3.3</td> <td>+3.465</td> <td>V</td> </tr> </tbody> </table> <p>Notes:</p>Detailed Descriptionhttps://docs.opsero.com/op073/datasheet/detailed-description/Mon, 23 Feb 2026 00:00:00 -0500https://docs.opsero.com/op073/datasheet/detailed-description/<h2 id="hardware-overview">Hardware Overview</h2> <p>The figure below illustrates the various hardware components that are located on the top-side of the M.2 M-key Stack FMC.</p>Mechanical Informationhttps://docs.opsero.com/op073/datasheet/mechanical/Mon, 23 Feb 2026 00:00:00 -0500https://docs.opsero.com/op073/datasheet/mechanical/<h2 id="dimensions">Dimensions</h2> <p>The mechanical dimensions of the M.2 M-key Stack FMC are illustrated in the figures below. All dimensions are in millimeters (mm).</p>Compatible Boardshttps://docs.opsero.com/op073/datasheet/compatibility/Mon, 23 Feb 2026 00:00:00 -0500https://docs.opsero.com/op073/datasheet/compatibility/<p>The following development boards are compatible with the M.2 M-key Stack FMC and can support at least one M.2 slot. If you know of a board that is not listed here and you would like to know if it is compatible, please <a href=https://opsero.com/contact-us target="_blank">contact us</a> .</p>Board Revision Historyhttps://docs.opsero.com/op073/datasheet/revision/Mon, 23 Feb 2026 00:00:00 -0500https://docs.opsero.com/op073/datasheet/revision/<h2 id="rev-a">Rev A</h2> <ul> <li>The M.2 M-key Stack FMC (OP073) is a variation of the FPGA Drive FMC Gen4 (OP063) product.</li> <li>Date of first manufacture: 2023-02-11</li> <li>Commercially released</li> </ul>