Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [m.2]

For questions about designing electronics that interface with m.2 connectors. M.2 is, according to Wikipedia, "a specification for internally mounted computer expansion cards and associated connectors."

For questions about designing electronics that interface with m.2 connectors. M.2 is, according to Wikipedia,

a specification for internally mounted computer expansion cards and associated connectors.

See Wikipedia's article on m.2 for more information.

15 questions
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How to read "golden fingers" on drawing?

Can you please help me getting width of theese golden fingers and what those text in red rectangle means? It is M.2 connector with E key.
filimonic
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M.2 PCIe x2 and SATA connections and key/notch with SATA/PCIe x4 SSDs

For my current project I am adding an M.2 slot for additional storage. Even though SATA data throughput is more than sufficient I would like to support both SATA and PCIe based SSDs, as I dont know what will be more/less available and affordable in…
L. Heinrichs
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M.2 to mini PCIE

I have an SBC with the following configuration on the M2 port If I require a mini PCIE device is it sufficient to make a breakout board and match pin to pin? We have a pcb engineer to handle the high frequency considerations, I just need to know if…
BlindGuy_Mcsqueezy
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PCIe routing for m.2 key e wifi module

I'm trying to make a PCB which include a WIFI module to m.2 key e. For this I'm using a PCIe connection. As HF routing must follow some guidelines, however I'm strugling a bit with the length of the tracks. The clock (1) is nearly 8mm longer than…
Yann
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M.2 SSD inserted into E slot

I managed to run an M.2 SSD (Samsung PM991A) in a TypeE socket with an adapter designed by CRImier (thank you): This card can be fit into an E slot, and can host an SSD (M type). My Linux is enumerating the SSD perfectly, and it can read/write…
Daniel
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Is it possible to leave certain pins of an m.2 slot not connected to their PCIe lanes on a processor?

We are in the process of making a custom board for a System On Module. The System On Module exposes 4 PCIe Gen 2 lanes on its SODIMM pinout. As per our requirement, we are planning on having a WiFi/BLE device and a PCIe SSD. WiFi/BLE chip requires…
surfinride
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Multiple PCIe devices in a single M.2 slot

I have a M.2 M-keyed slot on my laptop, and multiple M.2 PCI-e devices that I'd like to use at the same time. I've been looking for a M.2 switch or splitter of sorts but couldn't find anything, so I decided to design my own & also gain some PCI…
ozg
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SATA 3 to M.2 conversion

I'm designing a PCB that should (among other things) include an M.2 SSD slot and convert that to a SATA slot to be connected to a computer. I considered just soldering a commercial SATA-M.2-adapter onto the board but I'd prefer to integrate it into…
cat_in_the_chat
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how to extend usb c cable (usb 3)

its look like this qus is simple but its not at all see here what i did i have m1 air base model, and i have lack of capacity, its only 256 so i thought i need more space so i thought why not put m.2 inside the divece, (of course i know that it not…
AbdAlgani
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M.2 B-Key to USB implementation

I can’t seem to find much documentation on the M.2 standard or typical implementation schematics. I am currently working on a board for the raspberry pi in order to add cellular LTE/5G capabilities to the device. (normally I would just use a HAT…
OldAmmo
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ATMega32U4 USB design considerations

I'm desigining a board with ATMega32U4 microcontroller. The board will be minimal, and will feed the microcontroller from USB of an M.2 socket (E type) on a PC mainboard: Now, checking Leonardo's schematic, they are using varistors to protect USB's…
Daniel
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Some chips (probably DRAM) on NVMe SSD are lower than others, resulting heatsink having no contact with those chips after installation

I believe most of the NVMe SSD heatsinks' contact surface is just one flat piece, but not all the chips on the NVMe SSDs have the same height. From my recent observation, there are air gaps between some chips and the thermal pad/heatsink after…
Sij
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Will a 4 lane PCIe device work if plugged into a PCIe socket the only 1 lane electrically connected

I am designing a motherboard that uses a SMARC format plugin card for the CPU. This card is based on an Intel Atom x6413E CPU. The SMARC CPU card has various interfaces available, including USB2.0, USB3.0, SDIO, PCIex4 (Gen 3), SATA (Gen 3),…
Simon Bagley
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A USB 3 to M.2 Reference Design Schematic

I am looking to make a small project where I need to implement a USB3 to M.2 SATA circuit for SSD interface. I am pretty confident I can follow a reference schematic and route the board, I have done this type of thing before. But I don't know where…
Bogdan
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How to inteprepret jumper confiuration guide on PCB?

So I have a M.2 to mPCIe adapter board that unfortunately I don't have any documentation for. The purpose of the board is to allow for a 4g M.2 modem to connect to a PC with a mPCIe slot. Presumably by changing the configuration of R4/R5/R7 it's…
fo0
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