USB to M.2 Key B 4G 5G Modem Adapter with Dual SIM Card Slots


USB to Mini PCI-E Adapter with Dual SIM Card Slots

This USB to M.2 Key B 4G 5G Modem Adapter with Dual SIM Card Slots has two NANO SIM card slots, and uses the convenient “Click / Click” style slot.  The SIM card slots are positioned perpendicular to the adapter board, on the top of the adapter.

It is useful for attaching a 3G 4G LTE and 5G NGFF M.2 key B form factor (both 3042 and 3052) cellular modem cards (i.e., the Sierra Wireless and Quectel  EM series as well as the new longer Quectel 5G modules) directly to a PC, or router USB slot.

NOTE: This adapter does not work with Sierra EM919x/7690 series modems, nor Telits FN980 series 5G modems. If you need an adapter for those modems, this one is what you need: USB3 to M.2 4G/5G enclosure V7

Also great for remote modem placement using a USB cable of 12′ or less.

The Screw Pillar used for holding down your modem card is removable to change between 3042 (4G) and 3052 (5G) form modem modules.

We use these type adapters to flash firmware onto M.2 NGFF Key B cellular modem modules.



  1. 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.
  2. This USB adapter will not work with the mini PCI-E modem cards (i.e., Sierra Wireless MC series cards and Quectel EC/EP series cards).  The USB to mini PCI-E adapter must be used.
  3. In order for a Windows based PC to recognize most modem cards, regardless of how it is being attached, the modem manufacturers Windows drivers must first be installed on the Windows device.  Refer to our LTE FIX IT Series tutorial


Package includes:

1 x USB to M.2 Key B 4G 5G adapter card (with dual NANO SIM slots)

2 x hold down screws

1 x miniature phillips screw driver

NOTE: WWAN/LTE Module and SIM card is not included

Weight 2 oz
Dimensions 4.75 × 2.5 × 0.4 in


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