kobol-wiki/docs/helios64/m2.md

## M2 Connector (P2)
M.2, formerly known as the Next Generation Form Factor (NGFF), is a specification for internally mounted computer expansion cards and associated connectors. M.2 replaces the mSATA standard, which uses the PCI Express Mini Card physical card layout and connectors.

Supported bus in the Helios64 M.2 interface is SATA and USB 2.0.

!!! Warning!
       PCIe SSD is not supported.

---TBU---

## Location

Helios64 support M.2 device on header P2 which is located next to SATA 1 connector.
You can refer to the connector/interface list at [hardware overview](/helios64/hardware) page.
The location of the M.2 socket is shown in below figure:

![M2 Pinout](/helios64/img/m2/m2-zoom-w-symbol.jpg)

## Size

The maximum size of supported M.2 device is the 228 size. 

## Notes related to M.2 Card
The M.2 devices installed in Helios64 is configured as sharing devices with SATA Port 1.
Therefore if you install M.2 module, you will not be able to access the SATA Port 1.

The USB bus is connected to the EHCI Host 0.

The M.2 socket in the Helios64 board does NOT support the USB modem, because the USB modem require the SIM Card connection and another signal. (The GSM Pin is NOT connected in the Helios64 board)