4 ms·

Why would you use the M.2 for wifi and not a super fast disk in that slot? USB bus should be able to handle wifi just fine.

deleted 8y ago
[deleted]
tyingq 8y ago
Because it's a M.2 E slot, which has no SATA. Maybe there are SSD drives now that can use PCI and fit in the smaller E slots? There didn't used to be. If so, great...
- Zekio 8y ago
  just no SATA? or no SATA and no NVMe?
  - tyingq 8y ago
    M.2 E has PCIe ×2, USB 2.0, I2C, SDIO, UART and PCM. As far as I know, NVMe drives want 4 PCIe lanes.
    - llampx 8y ago
      There are recent low-cost NVMe drives that do 2x, I believe.
      - sitkack 8y ago
        If a PCIe device doesn't fall back to the available channels that is most likely a bug. An NVMe from a reputable manufacturer should work in this slot.
        tyingq 8y ago
        I really don't think it's that easy. Find a picture of an m2 drive has a connector that would fit an "M.2 E" slot. The connector would have to look like this: https://www.addonics.com/products/diagrams/M2-E-KEY-WIFI-CARD-diagram.jpg https://www.addonics.com/products/diagrams/M2-E-KEY-WIFI-CAR... I don't see any.
  - joshvm 8y ago
    The development kit specifically lists NVMe as an option https://www.nvidia.com/en-gb/autonomous-machines/embedded-systems/jetson-nano/ https://www.nvidia.com/en-gb/autonomous-machines/embedded-sy...
    - tyingq 8y ago
      Tried "search in page" for NVMe, no luck. Not sure what you're seeing.
      - joshvm 8y ago
        Weird. I opened it in reader mode. Doesn't seem to be on the normal page. It's a screenshot, maybe a draft? https://www.nvidia.com/content/dam/en-zz/Solutions/pattern-library/2019-02-28_11-40-50.gif https://www.nvidia.com/content/dam/en-zz/Solutions/pattern-l...
        tyingq 8y ago
        The "PCIe x 16" probably means that goes with one of the previous, much more expensive, Jetson boards. This $99 Jetson appears to have no direct support for any type of M.2 drive. Maybe some M.2E PCIe to SATA adapter board, if such a thing exists.
        uncoder0 8y ago
        Cool thanks for all the info. I just assumed the M.2 slots were all standardized. Didn't realize they were different.

deleted 8y ago

[deleted]

tyingq 8y ago

Because it's a M.2 E slot, which has no SATA. Maybe there are SSD drives now that can use PCI and fit in the smaller E slots? There didn't used to be. If so, great...

Zekio 8y ago
just no SATA? or no SATA and no NVMe?
- tyingq 8y ago
  M.2 E has PCIe ×2, USB 2.0, I2C, SDIO, UART and PCM. As far as I know, NVMe drives want 4 PCIe lanes.
  - llampx 8y ago
    There are recent low-cost NVMe drives that do 2x, I believe.
    - sitkack 8y ago
      If a PCIe device doesn't fall back to the available channels that is most likely a bug. An NVMe from a reputable manufacturer should work in this slot.
      - tyingq 8y ago
        I really don't think it's that easy. Find a picture of an m2 drive has a connector that would fit an "M.2 E" slot. The connector would have to look like this: https://www.addonics.com/products/diagrams/M2-E-KEY-WIFI-CARD-diagram.jpg https://www.addonics.com/products/diagrams/M2-E-KEY-WIFI-CAR... I don't see any.
- joshvm 8y ago
  The development kit specifically lists NVMe as an option https://www.nvidia.com/en-gb/autonomous-machines/embedded-systems/jetson-nano/ https://www.nvidia.com/en-gb/autonomous-machines/embedded-sy...
  - tyingq 8y ago
    Tried "search in page" for NVMe, no luck. Not sure what you're seeing.
    - joshvm 8y ago
      Weird. I opened it in reader mode. Doesn't seem to be on the normal page. It's a screenshot, maybe a draft? https://www.nvidia.com/content/dam/en-zz/Solutions/pattern-library/2019-02-28_11-40-50.gif https://www.nvidia.com/content/dam/en-zz/Solutions/pattern-l...
      - tyingq 8y ago
        The "PCIe x 16" probably means that goes with one of the previous, much more expensive, Jetson boards. This $99 Jetson appears to have no direct support for any type of M.2 drive. Maybe some M.2E PCIe to SATA adapter board, if such a thing exists.
        uncoder0 8y ago
        Cool thanks for all the info. I just assumed the M.2 slots were all standardized. Didn't realize they were different.