55 lines
2 KiB
Markdown
55 lines
2 KiB
Markdown
M.2 formerly known as the Next Generation Form Factor (NGFF) is a specification for internally mounted computer expansion cards and associated connectors. The M.2 replaces the mSATA standard.
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Helios64 provides an M.2 interface (J2) to connect the following expansion cards:
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* M.2 SATA SSD
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* M.2 USB2.0 modules (e.g NPU extension).
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!!! Important
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PCIe SSD is not supported.
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## Form Factor and Keying
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The M.2 connector (J2) is Key-B which is compatible with most of M.2 SATA SSD of Key-B or Key-M+B Key form factors.
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The board provides mounting holes for 2260 and 2280 cards.
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## Installation
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In order to install a M.2 device you will have to first mount a metal standoff on Helios64 board. Choose the mounting hole according to your M.2 device size (either 2260 or 2280).
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> **Install the standoff in one of the mounting hole with one M3x3mm screw.**
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!!! Note
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Standoff and screws are provided with Helios64 board.
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> **Insert the device in M.2 the slot.**
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> **Secure the M.2 device with the other M3x3mm screw.**
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## Usage
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The M.2 interface on Helios64 only supports SATA 3.0 and USB 2.0 buses.
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The M.2 SATA bus is shared with SATA Port 1. Therefore if you install an M.2 SATA SSD card, SATA Port 1 (J3) will automatically get disabled. But if you use the M.2 interface for USB modules, the SATA Port 1 (J3) is still enabled and accessible by the system.
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For more details refer to [SATA page](/helios64/sata/).
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!!! Note
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The M.2 interface on Helios64 may NOT support USB modem (WWAN) because USB modem often requires external SIM Card connection and other signals.
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