Same issue - card reader not recognized. Using SCR3310v2 USB-C. Works on Big Sur / Intel but not Big Sur / M1. LED never lights. Likewise never get the 'pairing' request when inserting the CAC as I did in Catalina. Have gone back and forth with both Identiv (reader manufacturer) and MilitaryCaC - no bueno. Installed latest driver from Identiv.
UTrust SmartFold SCR3500 Family. Part No: 905430, 905434, 905559-1. Contact ISO/IEC 7816, USB CCID, ultra-compact, convenient and yet robust, SmartOS™ Firmware.

Installation Steps

Step 1: Obtain a CAC Reader

Step 2:CAC Reader driver / Video

Step 3:DoD Certificates

Step 4:ActivClient

Step 4a:Update ActivClient

Step 5:IE adjustments/Video

Log into a CAC enabled website now

Page Quick Links:

Firmware Update for SCR-331

Verify SmartCard Service started

Start Smart Card Service PDFs

Updating a CAC Driver

Get a card reader. At this time, the best advice for obtaining a card reader is to work with your home component to get one. In addition, please review the DoD CAC Reader Specifications for more information regarding the requirements for a card reader. Obtain middleware. You will need middleware for Linux to communicate with the CAC. The USB interface enhances this easy to install, easy to use smart card reader, and ensures high speed, utilization of smart card enabled applications. The 215 Reader is backed by fourteen years of design, support, and expertise in smart card readers and systems, the 215 Smart Card Reader is one of the most cost effective and user-friendly.

Plug in your CAC reader NOW

NOTE: Please check and make sure your CAC reader installed BEFORE you attempt to follow the driver installation instructions below. Most of the time, the New hardware wizard will install the CAC reader automatically, negating the need for you to install the driver manually.

To Verify whether your driver did or did not install, follow these instructions:

Plug your CAC reader into your computer before proceeding

Windows 10: Right click the Windows logo (lower left corner of your screen). Click System, select Device Manager link (upper left corner of the screen), scroll down to Smart card readers, select the little triangle next to it to open it up. If your smart card reader is listed, go to the next step of installing the DoD certificates.

Windows 8.1: Right click Computer, select Properties, Device Manager link (upper left corner of the screen), scroll down to Smart card readers, select the little triangle next to it to open it up. If your smart card reader is listed, go to the next step of installing the DoD certificates. NOTE: If you don't see it, you can also click Start, In the Start Search line type in: devmgmt.msc. (For Windows 8.1 users, you'll right click Start).

If it did not install correctly.. Try this first: Go to Device Manager (Instructions are above), scroll down to Smart Card readers, right click the CAC reader that shows up below Smart Card Readers. It can also show up under unknown devices. Select Uninstall. It will give you a message. Once it is uninstalled, unplug the reader from your computer. Wait a few moments, then plug it back in. It 'should' start to install itself. If that doesn't work, keep reading for other ideas below.

IF you do not see Smart card readers when checking, THEN follow along with the steps below.

To install a driver onto your computer for a CAC reader, you need to first download the correct driver for the hardware you purchased, I have drivers for the most common USB Readers, Keyboard, laptop, & desktop card readers

PROCEED TO STEP 3 ONCE YOU'VE COMPLETED YOUR VERIFICATION OR INSTALLATION

Unzipping - the driver

Windows 10 or 8.1 - Save the zip file to a location of your choosing. Once you have the zip file downloaded, open the zip file (Windows built in zipping program). Copy the folder inside to a new folder. It will unzip the contents, (this is the folder you will need when you are doing the steps below). You can also use the Extract All Files button (on the left under Folder Tasks, under File, Extract All). It will then ask where you want to save the file. I recommend placing a backslash ( ) at the end of the location on the screen.

WinZip- Use the Extract button. It will ask you where you want to save the extracted files to, I recommend your desktop. Click the desktop icon on the left. Push the little yellow folder in the upper right corner of this active window. It will prompt you for a name for the folder (type in CAC Driver). Hit OK, then select Extract (lower right corner of this window). You should now see your new folder on your desktop to open up. Keep this for a later step.

Updating the Driver - Example is for an SCR-331

Windows 10 & 8.1 - Right Click Computer, Select Properties

Click the Device Manager link (on the left side of your screen)

Select the triangle next to Smart Card Readers

Right click the SCRx31 USB Reader, select Update Driver software

Browse my computer.. Select Browse, then desktop (or wherever you made the folder)

NOTE: One person had to select 'Search automatically for updated driver software' (This is very rare)

Select the folder (if using the firmware update driver below, stop at the driver folder, do not 'dig' down to AND or Intel folders) and then OK. Next

Your driver will be installed.

FIRMWARE UPDATE for SCR-331 Reader

(Requires a physical Windows computer, Mac using Bootcamp, or TENS / LPS (see next sentence below). It will NOT work in virtual Windows (examples: VMware, Parallels, or Virtual box)).

Verify your firmware version before going through this process..

1. Go to Device Manager, type: device manager in the search box

2. Select the arrow next to Smart card readers

3. Right click on SCR33x USB Smart Card reader

4. Select Properties

Camp merr

Cac Reader Update