Nikon D4S and Lexar 400x or 1000x Memory Cards Issue

Nikon USA has published more details on the issue when using certain Lexar 400x and 1000x memory cards with the Nikon D4s DSLR camera.

It has been reported that there are a small number of a specific type of Lexar CompactFlash® memory cards that may have a problem communicating with your Nikon D4S DSLR camera.

This article describes how to identify the problematic cards and what to do if you have one.

Nikon D4S and Lexar 400x or 1000x Memory Cards Issue

nikon-d4s-and-lexar-400x-or-1000x-memory-cards-issue

Identification Instructions

  1. Remove your CF® card from your camera.
  2. Look for the serial number on the edge of your CF® card.
  3. Identify if the last six part numbers (shown highlighted by the yellow X’s) contain 1 of the following 2 sequences : a – 8BAFBE b – 8DCB61
  4. If your CF card’s serial number contains 1 of the 2 sequences listed above, you must contact LEXAR support to replace your CF® card.
  5. If your card does not contain either of the 2 sequences, then your card is fully compatible.

Replacement Instructions

Please contact customer support to place an RMA for a replacement CF® card.

    • US & Canada: 1-888-747-4031
    • Freephone in the United Kingdom: +44 (0) 0800 013 7411
    • Japan: 570-12363
    • All other areas: 1-208-363-5862
    • OR contact customer service online HERE.

Nikon D4s DSLR Camera Price

Nikon D4s suggested retail price is $6496.95.

Pre-order & Buy Nikon D4s DSLR Camera
Nikon D4s Body Only $6,496.95 Amazon | Adorama

Nikon D4s features 16.2-megapixel FX-format CMOS sensor, EXPEED 4 processor, 51 point AF system, ISO 100 to ISO 25,600 native sensitivity, faster 11 fps continuous shooting.

See more details on the product page and sample images here. Nikon D4s user’s manual is here.


  • Adam Kaufman

    Hello, I am the Product Marketing Manager at Lexar and we have worked closely with Nikon to provide a support process

    and resolution for this firmware issue, as it was previously determined that a very small percentage of Lexar

    CompactFlash cards produced over 18 months ago are incompatible with Nikon’s newest firmware release. If you have gone

    through the identification process and deemed your product incompatible with the latest firmware update, please contact

    Lexar’s customer service group and we will replace your card with no questions asked. We want you to get back to

    capturing life’s important moments as quickly as possible, and Lexar remains committed to providing the highest quality

    memory card products in the market.

    To contact customer service, please try:
    US & Canada: 1-888-747-4031
    Freephone in the United Kingdom: +44 (0) 0800 013 7411
    Japan: 570-12363
    All other areas: 1-208-363-5862
    OR contact customer service online at lexar.com/support