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$45^.45

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Main image of AJMRTC M.2 B Key to M.2 NGFF M Key / B Key Adapter Board, PCIe Protocol Expansion Card with Nano SIM Slot for 4G 5G WWAN Modules, Supports 3042 / 3052 Size Modules

Alt view image 2 of 7 - AJMRTC M.2 B Key to M.2 NGFF M Key / B Key Adapter Board, PCIe Protocol Expansion Card with Nano SIM Slot for 4G 5G WWAN Modules, Supports 3042 / 3052 Size Modules

Alt view image 3 of 7 - AJMRTC M.2 B Key to M.2 NGFF M Key / B Key Adapter Board, PCIe Protocol Expansion Card with Nano SIM Slot for 4G 5G WWAN Modules, Supports 3042 / 3052 Size Modules

Alt view image 4 of 7 - AJMRTC M.2 B Key to M.2 NGFF M Key / B Key Adapter Board, PCIe Protocol Expansion Card with Nano SIM Slot for 4G 5G WWAN Modules, Supports 3042 / 3052 Size Modules

Alt view image 5 of 7 - AJMRTC M.2 B Key to M.2 NGFF M Key / B Key Adapter Board, PCIe Protocol Expansion Card with Nano SIM Slot for 4G 5G WWAN Modules, Supports 3042 / 3052 Size Modules

Alt view image 6 of 7 - AJMRTC M.2 B Key to M.2 NGFF M Key / B Key Adapter Board, PCIe Protocol Expansion Card with Nano SIM Slot for 4G 5G WWAN Modules, Supports 3042 / 3052 Size Modules

Alt view image 7 of 7 - AJMRTC M.2 B Key to M.2 NGFF M Key / B Key Adapter Board, PCIe Protocol Expansion Card with Nano SIM Slot for 4G 5G WWAN Modules, Supports 3042 / 3052 Size Modules

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AJMRTC M.2 B Key to M.2 NGFF M Key / B Key Adapter Board, PCIe Protocol Expansion Card with Nano SIM Slot for 4G 5G WWAN Modules, Supports 3042 / 3052 Size Modules

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- Converts M.2 B Key 4G/5G module to M.2 M Key or B Key host slot, follows PCIe protocol
- Built-in Nano SIM card slot for cellular network activation
- Compatible with 3042 and 3052 form factor M.2 WWAN modules
- Gold-plated contacts for stable signal transmission and low interference
- Widely used for industrial PC, mini PC, gateway and mobile communication projects

Overview

Specs

Reviews

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AJMRTC M.2 B Key adapter board is specially designed for 4G and 5G WWAN modules. It allows you to install a B Key cellular module into M.2 M Key or B Key NGFF slots on motherboards. It supports PCIe signal and comes with a Nano SIM slot to enable cellular internet access. It fits 3042 and 3052 size M.2 modules. It is a practical expansion solution for industrial gateways, mini hosts, embedded systems and custom network equipment.

Specifications

Brand: AJMRTC
Model: AJM-M2-B-MKEY-4G5G
Input Slot: M.2 B Key (for 4G / 5G WWAN module)
Host Interface: M.2 NGFF M Key / B Key
Signal Protocol: PCIe
SIM Slot: Nano SIM
Supported Module Size: 3042, 3052
Application: Industrial PC, Mini PC, network gateway, embedded communication equipment
Note: Not for M.2 NVMe SSD

Additional Information
First Listed on Newegg	October 29, 2026

Warranty & Returns

Warranty, Returns, And Additional Information

Warranty

Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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Return Policies

Return for refund within: 30 days
Return for replacement within: non-replaceable
This item is covered by ‌ConnectFlow USA Return Policy

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Item#: 9SIC9FFM9P2710