4K DESFire memory
File-based memory for compatible multi-application systems.

Check the full product specification before ordering.
SKU: DS4K
Available to order
MIFARE DESFire EV2 4K cards provide blank stock for a system using the specified NXP multi-application chip. This offer contains 100 CR80 cards. Choose the 4K memory version against the application layout, and plan both the printed identification and electronic personalisation before issuing the cards.
Prices exclude VAT. Choose the exact pack or option you need.
File-based memory for compatible multi-application systems.
Cryptographic support requires suitable keys and software.
Check EV generation, memory, reader and enrolment requirements.
MIFARE DESFire EV2 4K cards provide blank stock for a system using the specified NXP multi-application chip. This offer contains 100 CR80 cards. Choose the 4K memory version against the application layout, and plan both the printed identification and electronic personalisation before issuing the cards.

The DESFire EV2 interface uses 13.56 MHz and ISO/IEC 14443 Type A, including the ISO/IEC 14443-4 transmission protocol. The chip supports AES and DES/3DES cryptographic methods; the reader, software, keys and chosen configuration determine how these capabilities are used. Memory capacity is shared by application files and management information.
A DESFire card is not automatically a working credential for an existing installation. Check the required EV generation, 4K capacity, application identifiers, key configuration and enrolment process with your system provider. A matching frequency alone does not establish compatibility.
These cards are listed in the standard CR80 credit-card format; check your printer's stock requirements before personalisation. Consult the NXP DESFire EV2 short data sheet and give ACB your approved card specification when ordering.
When selecting MIFARE DESFire EV2 4K cards, ask the system provider for the required EV generation, memory capacity and application specification. Keep that information with the approved card design. This gives ACB a clearer replacement brief than a photograph of an unmarked white card alone.
Compare the 2K EV2 option if the application supplier has approved a choice of capacities. Prepare a test card with the required files and visible artwork, then check the reader and issue process together. For a printed staff badge, position names and photographs for easy inspection and choose a matching portrait holder or landscape holder.
The nominal 4K capacity is shared by applications and management information. Have the application provider confirm the usable layout and required capacity for the planned files.
Confirm the required EV generation, commands, key configuration and reader support. A shared DESFire family name or operating frequency is not enough to approve a substitution.
Access depends on the configured application and enrolment process. A visual badge design does not set keys or assign permissions. Agree the print and electronic requirements before ordering production quantities.
Choose the required quantity and check the selected option before adding it to your basket. For help with the card specification, artwork or a matching accessory, contact ACB.
| Chip family | NXP MIFARE DESFire EV2 4K |
|---|---|
| Nominal memory | 4 kB; shared by applications and management data |
| Frequency | 13.56 MHz |
| Contactless interface | ISO/IEC 14443 Type A; ISO/IEC 14443-4 |
| Cryptographic support | AES and DES/3DES; system configuration required |
| Listed card format | CR80 credit-card format |
| Pack quantity | 100 cards |
| Brand | Mifare |
| Product code | DS4K |
Check the complete manufacturer specification, selected options and included items before ordering.
Dispatch depends on the exact product and availability. Confirm any required date with ACB. For personalised products, production follows artwork/proof approval and courier transit is separate.
Read the delivery & returns policyHave the product code, existing equipment or card reference, quantity and intended use ready. ACB can help you check what needs confirming.
Call 01308 426312Match the exact model, card format or attachment when choosing supplies and accessories.
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