Description
Expand Your M.2 B+M Key Slot with Storage or WWAN Support
The M.2 E Key to M.2 B+M Key Adapter allows devices with an M.2 B/M Key interface (commonly used for NVMe SSDs or WWAN modules with PCI signal) to be connected to a host with an M.2 E Key slot (typically used for Wi-Fi, Bluetooth, and other wireless modules). This adapter is ideal for systems that only provide an E Key slot but require support for storage or WWAN modules.
The USB signal required by Bluetooth can come from the B/M slot or be introduced externally.
Cautions
- Power off the system before installation/removal.
- This adapter only provides physical pin mapping; protocol incompatibility will prevent operation.
For further technical details, consult the official M.2 specification or contact your hardware provider.
D1 (Blue) : Power indicator light
D2 (White) : The LED1 module is connected to the LED contact of the Golden Finger simultaneously on this conversion board.
D3 (White) : Module LED2
Features
- High-quality PCB for stable signal transmission
Application Examples
- Installing Wi-Fi module in embedded systems with only M Key slots
Standard
| Model Name | ACM2BM-2E1 |
| Input Interface | M.2 E Key (Socket 2/3, supports 22×42/60/80 mm) |
| Output Interface | M.2 B+M Key (Socket 1, 2230/2242/3042/3052) |
| Supported Protocols | USB, PCIe x2 (depending on host and module) |
| Supported Devices | USB, PCIe x2 (depending on host and module) |
| Dimensions | 22 mm x 80 mm (host side), and provides 2242/2260 screw holes also. |
| Installation | Tool-less insertion, screw mounting |
| Power Supply | Operation W/T temp: -40°C ~ +85°C Storage: -55°C ~ +95°C |
| Operating Temp. | 0°C ~ 70°C |
| Storage Temp. | -40°C ~ 85°C |
| PCB Material | High-quality PCB, gold-plated edge connector |
Pinout Mapping
| M.2 B+M Key Pins | M.2 E Key Pins | Function/Notes |
| 1~75 | 1~75 | Standard mapping |
| B Key | E Key | Protocol dependent |
Note : Some pins may not be fully mapped due to differences in protocol support (e.g., PCIe lane count, USB, I2C, UART). Actual compatibility depends on the host and module used.
Mechanical Drawing
| Parameter | Dimension |
| Length | 80 mm |
| Width | 22 mm |
| Thickness | 1.2 mm |
Additional information
| Weight | 0.0185 kg |
|---|---|
| Dimensions | 10 × 6.5 × 1.5 cm |
