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Comment by scruffyherder | Hacker News Reader

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scruffyherder·

Quad core arm, 4gb of ram and gigE!

Seems like a really nice board

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Also has an M.2 slot for WiFi, as well as both HDMI and DP...supports two simultaneous displays out of the box.

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.

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...

just no SATA? or no SATA and no NVMe?

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.

There are recent low-cost NVMe drives that do 2x, I believe.

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.

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-CAR...

I don't see any.

The development kit specifically lists NVMe as an option

https://www.nvidia.com/en-gb/autonomous-machines/embedded-sy...

Tried "search in page" for NVMe, no luck. Not sure what you're seeing.

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-l...

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.

Cool thanks for all the info. I just assumed the M.2 slots were all standardized. Didn't realize they were different.

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