USB3.0 to NGFF M.2 Key B Adapter Enclosure with SIM Card Slot


USB3.0 to accommodate Sierra Wireless EM series and other M.2 modems

The USB3 to NGFF M.2 Key B adapter enclosure is a useful device for connecting a 4G LTE NGFF (M.2) modem card (i.e., Sierra Wireless EM7565, EM7455, EM7354, Quectel EM12-G, EM20-G, EM06-A, etc.) behind a PC or router via a USB port. This model does not have the screw pillar nor space (length) for a 5G modem.

The enclosure's SIM Card slot is equipped with ESD protection and uses a Standard (full size) SIM Card.

The USB 3.0 A Male to Micro-B Male plug (AM-Micro BM) provides a durable and solid connection to the enclosure.   The data power cable is 15.75 inches long and may be extended with the use of quality USB 3.0 extension cables.

USB3.0 (4.8Gbps) boasts of providing Ten Times the capability of USB 2.0.  It also provides 900mA power as opposed to 500mA utilized thru USB 2.0.  Type A connectors are are backwards compatible to USB 2.0 and/or USB 1.1.

The PCB is engineered with the industry inductance and an independent power capacitor and is equipped with an extra Micro USB power port for applications where additional (dual) power is required.

It accepts a wide range of DC input voltage from 5V-27V with a maximum output of 3.3V/3A (9W) to accommodate even the most power intensive M.2 modems.

The enclosure may be used on a desktop or mounted to a wall.  It uses the industry standard SMA Male 4G LTE antennas (purchased separately, see antenna options below) and includes two MHF4 to SMA female bulkhead (1.13 cables) pigtails (to connect the M.2 modem to the antennas).

There are six cutout holes totaled in the cases (two in front and 4 in the rear) for adding additional antennas to accommodate 2×2 and 4×4 MIMO M.2 modems.

Compatible Cellular Omni SMA Male Antennas:


  1. When extending the USB3.0 cable use only large diameter and quality cable to prevent voltage drop which can and will lead to disconnect issues.
  2. When adding antennas, select the SMA antenna upgrades.  The RP-SMA will not work without installing MHF4 connector to RP-SMA bulkhead connector pigtails.
  3. When using a SIM Card adapter (i.e., micro to standard, etc), take precaution that the SIM card fits “freely” and flat into the adapter.  In other words, you should not have to force the SIM card into the adapter.  A SIM card that is too tight, when installed in the SIM slot, can rise and cause a misalignment between the adapter pins and SIM card.  All tits/nubs on the side of the SIM card should be sanded smooth.  This is easily done with a laying a nail file/emery board/piece of sand paper flat on table top, and working the SIM card evenly across until smooth.
  4. This USB adapter will not work on the Mini PCI-E modem cards (i.e., Sierra Wireless MC series cards).  The USB3 to Mini PCI-E  adapter enclosure must be used.
  5. In order for a Windows based PC to recognize a Sierra Wireless modem card, regardless of how it is being attached, the Sierra Wireless Windows drivers must first be installed on the Windows device.  Refer to our LTE FIX IT Series tutorial

Package Content:

  • 1 x  USB 3.0 to NGFF (M.2) PCB and Enclosure
  • 1 x USB3.0 to  Micro-B Male 15.75 Inch power Cable
  • 2 x MHF4 to SMA Female Bulkhead connector 1.13 pigtails
  • 1 x M2 Screw

**Antennas and M.2 Modem are not included


A look inside the cases:


Sierra Wireless EM7565 and USB3 to M2 Adapter Enclosure (KIT)
Sierra Wireless EM7565 and USB3 to M2 Adapter Enclosure (KIT)


Example setups of using a 4×4 MIMO compatible Modems:




Weight 8.7 oz
Dimensions 6.5 × 4 × 1.5 in

8 reviews for USB3.0 to NGFF M.2 Key B Adapter Enclosure with SIM Card Slot

  1. Albert Reyna

    This enclosure rocks! It works great on my DW5821e modem. No disconnects and I love how compact it is. Will be going in a lte fix enclosure in the near future!

  2. Thomas G Dodd (verified owner)

    The enclosure worked well with my EM7455 module. I hooked it to a windows laptop and once I installed drivers from Sierra website and two apps from Microsoft App Store (Skylight app and Sierra Wireless app), I was able to connect to service with my SIM. Download speeds were good and comparable to having EM7455 installed in computer device directly. Item arrived a few days after submission of order.

  3. Kyle Adams

    Everything on this adapter works great. Fits my EM20-G.

  4. shazim ali

    This little enclosure kit works very well with the EM7565 with CBA850– no reboots ,very solid with em7565 – definitely would recommend.

  5. prdg79

    Using the enclosure with Ouectel EM12-G, POE injector, and Raspberry PI 3+. So far works great. Everything is recognized and easy to use.

  6. pinerix

    This little enclosure kit works very well with the EM7455/ASUS-AC68U. AC68U router has the GoldenOrb firmware and its USB3.0 port served as the power/signal connection to this enclosure. This setup was very stable and normally didn’t require any reboot.

  7. Richard Jones

    This enclosure worked great with the EM7455. This worked just fine with a router that had USB 2.0 without using the aux power port. It also worked well connected directly to my Windows 10 computer with the current EM7455 drivers installed . This works great with my current setup which is a Linksys wrt1200ac version 1 that has a USB 3.0 port and GoldenOrb installed. The enclosure has a nice build quality since it is all metal and the usb cable is nice and thick. Overall it a great product and performs well.

  8. itunited

    These enclosures work great for the EM7565 with a 10 foot USB 3.0 to micro-b extension cable. Had issues with the USB 2.0 to M.2 black enclosure with this modem and went thru two in a short period. No problems with this adapter. Good price for its design and capabilities.

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