How can I tell what version of Thunderbolt software I have on my Acer computer? Connect a Thunderbolt device to your computer. If you do not have a Thunderbolt 3 device connected, you will be unable to see the NVM firmware version. Type Thunderbolt in the Windows search box and choose Thunderbolt Software from the search results. Right-click the Thunderbolt icon in the system tray in the lower right corner of your screen. Click Settings and select Details to show the firmware version. Note: You may need to click the caret to show the Thunderbolt icon in the system tray as shown in the screenshot below.