M.2 2×2 Card

New M.2 card for the ODROID-H4 and ODROID H3 Series The M.2 screws are pre-installed. (2 pcs) The M.2 2×2 card, provides two M.2 PCIe Gen 3 x2 lanes connectors, from the PCIe Gen 3 x4 lanes of the mainboard. It allows you to use two M.2 devices: any combination of NVMe drives, Network adapters, WiFi adapters, 5G adapters, etc that leverage the bandwidth of PCIe Gen 3 x2 lanes. Because the PCIe Gen 3 configuration (bifurcation) is embedded in Intel microcode that is merged into the BIOS bin file at build time, you need to flash a different version of the BIOS to use one of these two new cards. The M.2 2×2 card requires a new BIOS that provides a 2×2 bifurcation. You also find this BIOS on the Wiki pages for the H3 and H4. Important Note: Make sure to select the right BIOS, for the H4 or for the H3. Like the NetCard 2.5 GbE, these two new cards are installed under the mainboard, they slide into the mainboard M.2 connector and then are screwed to fix them solidly. Thanks to this integration, these two new cards are compatible with all the ODROID-H3 and ODROID-H4 series. Note however that if you use tall M.2 devices, you may have to select a case that provides enough bottom vertical space. Note: This product is not compatible with the ODROID-H2 series. This product only includes the M.2 2x2 Card. Product Compatibility H2 Series H3 Series H4 Series NetCard v1 (2.5GbE) Yes Yes Yes NetCard v2 (2.5GbE) Yes Yes Yes M.2 2×2 Card No (1) Yes Yes M.2 4×1 card No / Maybe (2) No / Maybe (2) Yes   (1) The H2 CPU (Celeron J4115) does not support the 2×2 PCIe bifurcation. (2) The M.2 4×1 card has a larger footprint and does not physically fit under the H2 or H3 boards. Therefore, the card cannot be fixed directly to the board like with a H4. HOWEVER, if you can find an M.2 male/female extension cable plus perform some additional DIY for mounting the card in your box or case, you can use the M.2 4×1 card with the H2 or H3.