Questions tagged [m2]
8 questions
3
votes
2 answers
M2 Key E - can it host an NVMe SSD?
I found an SBC which has an M2 socket for WiFi cards. It's keying is E.
I couldn't decide whether I can plug an M2 NVMe SSD into this socket.
Key E normally has PCIe x2, which is not as fast as PCIe x4 for other key types.
But still. Can I attach a…
Daniel
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2
votes
0 answers
M2 typeM PCB design interference
I found online an M2 keyE to M2 keyM adaptor design done with KiCAD:
https://github.com/CRImier/MyKiCad/tree/master/Laptop%20mods/nvme_ae_to_m
One thing I can't understand: in readme he states
FOXCONN AS0BC21-S20BM-7H socket datasheet was used for…
Daniel
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1
vote
0 answers
What happened to the M2.com standard?
I just discovered some news articles from 2016 announcing an IoT standard called "M2.com", with quite a few big names supporting it. It was basically meant to be a standard pinout for the M2 connector carrying I2C, SPI, etc.
But it seems to have…
DamienD
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0
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1 answer
Designing M.2 socket for SSD
I'm designing a card adaptor which converts from M.2 Key E type to M.2 Key M type (to insert an NVMe SSD into a port designed originally for Wifi cards).
I found some reference design for the M.2 KeyM socket:
MY questions:
If I only wish to use…
Daniel
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0
votes
1 answer
Wiring M.2 E to M - switching differential lanes is normal?
I managed to run an M.2 SSD (Samsung PM991A) in a TypeE socket with an adapter designed by CRImier (thank you):
I wish to design my own board with similar functionality, and I can't understand one thing with this desing.
Here is the…
Daniel
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0
votes
1 answer
Second PCIe on KeyE M.2?
Based on this online resource, KeyE M.2 has
2x PCIe x1 / USB 2.0 / I2C / SDIO /
UART / PCM
Their pinout table shows these lanes (for E-key):
35 PETp0
37 PETn0
41 PERp0
43 PERn0
47 REFCLKp0
49 REFCLKn0
50 SUSCLK
52 PERST0
53 CLKREQ0
55 PEWAKE0
59…
Daniel
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0
votes
0 answers
M2 (key B) connector with supported USB interface
At many motherboards there is M2 (key B) connector. This connector support several interfaces: PCIe ×2, SATA, USB 2.0 and 3.0, audio, UIM, HSIC, SSIC, I2C and SMBus.
But as I understood, all of these is possible functionality and motherboards could…
j e
- 11
0
votes
1 answer
PCIe PRST pin functionality at M2 connector (B) with SATA device (reboot detection)
M2 connector type (key B) support PCIe ×2, SATA, USB 2.0 and 3.0, audio, UIM, HSIC, SSIC, I2C and SMBus.
I want to use SATA interface with my device, but I need to detect the reboot of the host machine (at my SATA device).
PCIe required PRST# pin…
j e
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