I have a Dell Precision M4700 laptop. But I can't figure out what this thing in the picture is. Can somebody help?

Dell Precision M4700

  • According to the Dell site of your model it should have Mobile Broadband & GPS and the picture you're seeing is most likely to indicate that
    – Darius
    Jun 22, 2013 at 18:56
  • 1
    For the same of search engine friendlyness, I'd like to point out that looks like a rectangle or card with a radio symbol around it and that it dosen't look much like the official near field communication symbol on the wikipedia article.
    – Journeyman Geek
    Jun 23, 2013 at 10:51

3 Answers 3


This icon indicates an NFC reader. It is used for two-factor authentication using a contactless smart card and a password.

This means you can log into your computer by both tapping a smart card to the icon and typing your password, offering added security. This is often used in corporate environments where high security is required.

For more information, see page 79 (PDF page 50) of this Dell document. The reader supports several NFC protocols, including iCLASS and MIFARE.

  • 2
    I just tapped my smartphone which has NFC. Nothing happened. :(
    – Mayank
    Jun 22, 2013 at 19:00
  • The reader might not be enabled continuously.
    – bwDraco
    Jun 22, 2013 at 19:01
  • 1
    I don't think it is NFC. No such thing appears in Device Manager.
    – Mayank
    Jun 22, 2013 at 19:02
  • Look for a smart card reader in Device Manager. Perhaps it is disabled at the BIOS...
    – bwDraco
    Jun 22, 2013 at 19:03
  • 2
    That's for a different type of smart card than what you're using. You're using a contact smart card. The NFC reader is for contactless smart cards.
    – bwDraco
    Jun 22, 2013 at 19:15

It appears to be the contactless smart card reader. It should appear as "Broadcom Unified Security Hub CV w/fingerprint sensor" in the Device Manager.

  • There is one "Dell Control Vault with fingerprint swipe sensor". I will test this out.
    – Mayank
    Jun 22, 2013 at 19:15

It's a Contactless Smart Card reader, according to the manual (see p81). No word on NFC in the manual.

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