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Green circuit board adapter with M.2 slot, USB connector and two SIM card slots

SMUGDESK

SMUGDESK M.2 Key B to USB3.0 Adapter Dual Nano SIM 3042 3052

SKU CH-MQHR-XGMDS

Converts M.2 Key B 3042/3052 modules to USB 3.0 with dual Nano SIM slots for network redundancy

  • Dual Nano SIM slots enable network failover for IoT gateways
  • M.2 Key B 3042/3052 support fits 3G/4G/5G modules
  • USB3.0 Gen1 5Gbps bandwidth handles high-speed 5G data
  • Built-in ESD and overcurrent protection secures module operation
  • Plug-and-play on Windows 10/11 and Linux systems

Key B M.2 to USB 3.0 Adapter with Dual Nano SIM

This adapter converts M.2 Key B modules in 3042 and 3052 sizes into a USB 3.0 device. It supports 3G, 4G LTE, 5G NR and WiFi modules for portable modem and industrial IoT use. Dual Nano SIM slots allow network switching and backup during development or field deployment. The board is designed for lab testing, DIY modem setup and IoT gateway production.

USB 3.0 Gen1 Power and Thermal Profile

The adapter draws power directly from the host USB port with no external supply required. Built-in overcurrent protection limits excess draw to protect both the module and the host controller. Gold-plated M.2 contacts reduce resistance and oxidation for stable operation under load. ESD protection helps guard the module during insertion and hot-plug events.

Build Quality and Connector Layout

The M.2 slot accepts Key B modules in 3042 and 3052 form factors from mainstream brands. Two independent Nano SIM slots sit on the board for easy swapping without tools. Reserved solder points allow external SMA antenna wiring for improved signal in shielded enclosures. Plug-and-play on Windows 7 through 11 and mainstream Linux; only the cellular module driver is needed.

How it compares

Measured against everything we stock in USB Adapter Cables & Dongles, at today’s prices. Recalculated every night.

Price $26.99
Pricier than about 83% of the 1,430 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

How do I insert an M.2 3042 or 3052 module into the Key B slot and connect the dual Nano SIM cards?

Align the module notch with the Key B slot, press down until it clicks, secure with the mounting screw, then insert both Nano SIM cards into their labelled trays before plugging the adapter into a USB 3.0 port.

What maintenance will the gold-plated M.2 connector and SIM trays need over time?

The gold-plated M.2 slot resists oxidation; simply reseat the module and SIM cards if contact issues appear, and keep the SMA solder points free of solder bridges when adding external antennas.

At what point does the USB 3.0 Gen1 5Gbps link become the bottleneck for a 5G module?

Sustained 5G throughput above 5 Gbps will hit the USB 3.0 Gen1 ceiling first, so the adapter limits peak speed to the bus maximum rather than the module capability.

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