Depending on your Rok Box configuration, you may either add more m.2 SSDs to your PC, or replace those already installed with larger capacity drives, depending on your needs.
First, you'll need a new m.2 SSD, such as the one found at the below link:
Once you have these materials, you can move onto installing a new drive in your Rok Box.
First, locate an open or existing m.2 data port on your motherboard. They are found in these locations on your Rok Box's motherboard:
Once an m.2 drive is installed into an open m.2 slot, or having replaced an existing m.2 drive, you may move onto formatting the new drive.
Replace the PC case sides or top case, boot up your Rok Box, and then right-click the Start button, and click Disk Management.
Once Disk Management opens, you'll need to first initialize your new drive.
The disk management console will ask you to confirm that you wish to initialize your new drive -- click OK if a message pops up asking you to do so. If not, right-click the drive from the list of drives in your PC -- it will show as unallocated, as the drive has not yet been partitioned.
Next, right-click the new drive, click "format", and choose "new simple partition", and then walk through the wizard to format and name the drive. You may name your drive any name you wish.
You should now be able to use your new drive.
If you have issues or questions with this process, please feel free to reach out to PCAudioLabs support.