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# Cubo Libre M.2
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The SiFive HiFive Unmatched board comes with two M.2 connectors.
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* Wikipedia M.2:
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https://en.wikipedia.org/wiki/M.2
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* `E`: 24-31 pins, 2x PCIe x1, USB 2.0, I2C, SDIO, UART and PCM.
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* `M`: 59-66 pins, PCIe x4, SATA and SMBus.
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Need to determine compatibility for width/length.
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# Getting Started Guide:
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* M.2 E Key Connector for WiFi/Bluetooth.
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* M.2 M Key Connector for NVMe SSD.
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# BOM
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In the bill of materials, these components are used for attaching
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M.2 devices:
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* `P/N J0000059`,
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`CONN M.2 EDGE M KEY DUAL FMALE 67POS 0.020`.
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Two manufacturer components are listed:
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* Antenk Electronics `AP-APCI0079-P`,
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* `TE Connectivity 1-2199119-5`.
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* `P/N J0000089`,
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`CONN M.2 EDGE E KEY DUAL FMALE 67POS 0.020`.
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Two manufacturer components are listed:
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* Antenk Electronics `AP-APCI0085-B`.
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* TE Connectivity `2199119-4`.
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* `P/N K0000002` is an M.2 spacer, two on the motherboard:
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`M.2 SMD SPACER M2.5 SCREW`.
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Manufacturer: Penn Engineering, P/N `SMTSO-M25-2ET`.
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