Delkin Devices BLACK 1TB CFexpress™ Type B 4.0 VPG400 Memory Card

💾 Delkin Devices BLACK 1TB CFexpress Type B 4.0 Memory Card — DCB4BV41T

The Delkin Devices BLACK 1TB CFexpress Type B 4.0 Memory Card combines exceptionally fast recording performance, high capacity and professional reliability for demanding photography and cinema production.

Its PCI Express 4.0 interface delivers maximum read speeds up to 3630 MB/s, maximum write speeds up to 3130 MB/s and sustained write speeds up to 2040 MB/s. VPG400 certification guarantees a minimum sustained write speed of at least 400 MB/s with compatible equipment, supporting high-bitrate 8K, 6K and 4K RAW recording as well as extended high-resolution photo bursts.

The serialized BLACK Series card also includes Delkin’s limited lifetime warranty and premium 48-hour replacement guarantee following registration.

✨ Key Features

• 1TB storage capacity

• CFexpress Type B form factor

• CFexpress 4.0 specification

• PCI Express 4.0 interface

• Maximum read speed up to 3630 MB/s

• Maximum write speed up to 3130 MB/s

• Sustained write speed up to 2040 MB/s

• VPG400 certified

• Guaranteed minimum write speed of 400 MB/s

• Supports high-bitrate 8K, 6K and 4K RAW video

• Designed for extended RAW photo bursts

• Water-, shock- and temperature-resistant construction

• Individually serialized

• Compatible with Delkin CardDoc software

• Limited lifetime warranty

• 48-hour replacement guarantee after registration

• Protective storage case included

• Manufacturer number: DCB4BV41T

⚡ Exceptional CFexpress 4.0 Performance

The latest CFexpress 4.0 interface provides up to twice the potential bandwidth of the previous CFexpress 2.0 generation.

The DCB4BV41T provides:

• Maximum read speed: Up to 3630 MB/s

• Maximum write speed: Up to 3130 MB/s

• Sustained write speed: Up to 2040 MB/s

• VPG-guaranteed minimum: 400 MB/s

This performance helps compatible cameras record large amounts of data quickly while also reducing transfer times during backup and post-production.

Maximum speeds require a CFexpress 4.0-compatible reader, computer interface and supporting hardware. Actual in-camera performance depends on the camera.

🎬 VPG400-Certified Video Recording

The Video Performance Guarantee 400 rating certifies that write speed will not fall below 400 MB/s under supported VPG operating conditions.

This consistent performance is particularly important when recording:

• 8K RAW video

• 6K RAW video

• High-bitrate 4K

• High-frame-rate video

• All-Intra formats

• Professional cinema codecs

• Extended continuous takes

Stable sustained writing helps prevent dropped frames, interrupted clips and recording errors during critical production.

📸 High-Speed RAW Photography

The card’s fast write performance helps compatible cameras clear their internal buffers efficiently during high-resolution continuous shooting.

It is an excellent choice for:

• Professional sports

• Wildlife and birds

• Motorsports

• Weddings and events

• Photojournalism

• Commercial photography

• High-resolution RAW capture

• Cameras producing large stacked-sensor image sequences

A larger buffer and faster card can allow photographers to maintain useful burst speeds for longer and return to full camera operation sooner.

🎞️ 1TB Capacity

The generous 1TB capacity provides substantial space for large RAW files and high-resolution video.

It is especially valuable for:

• Full-day assignments

• Extended cinema productions

• 8K and 6K recording

• High-frame-rate slow motion

• Long wildlife or sports sessions

• Travel where frequent backups are inconvenient

• Hybrid assignments combining stills and video

Actual formatted capacity is lower because of system formatting and measurement conventions.

💻 Faster Post-Production Workflow

Read speeds up to 3630 MB/s can dramatically reduce the time required to offload large shoots when the card is paired with a compatible CFexpress 4.0 reader and high-speed computer connection.

This allows photographers and filmmakers to begin backing up, editing and delivering their work sooner.

A CFexpress 2.0 reader can generally access the card but will limit transfers to the reader’s lower interface speed. A USB4 CFexpress Type B 4.0 reader is recommended to take full advantage of its performance.

🛡️ Rugged BLACK Series Construction

Delkin’s BLACK Series cards are designed for professional use in difficult environments. The rugged construction provides resistance to:

• Water

• Shock

• Extreme temperatures

• Frequent insertion and removal

• Demanding field conditions

The card is rated to operate from approximately 32° to 158°F.

Although rugged construction adds protection, important files should always be copied to separate storage as soon as possible.

🔢 Individually Serialized

Each BLACK Series card carries an individual serial number. Serialization helps Delkin maintain controlled product identification and supports its warranty and replacement services.

Registering the card with Delkin is required to activate the BLACK Series replacement program and limited lifetime warranty benefits.

🔄 48-Hour Replacement Guarantee

Registered Delkin BLACK cards qualify for the company’s premium replacement program.

If a card becomes nonfunctional, Delkin can ship a replacement within 48 hours or less—excluding weekends—before receiving the defective card. Replacement may also be available through participating authorized Delkin BLACK retailers.

Program terms, registration and eligibility requirements apply.

🛡️ Limited Lifetime Warranty

In addition to the replacement program, the card is protected by Delkin’s limited lifetime warranty following registration.

This professional support is one of the primary distinctions between the BLACK line and conventional consumer memory cards.

🩺 Delkin CardDoc Compatibility

The DCB4BV41T is supported by Delkin’s CardDoc software, which can:

• Display the card’s current health status

• Help monitor reliability over time

• Perform a complete sanitize operation

• Clear memory cells to help restore optimum performance

CardDoc requires a compatible Delkin CFexpress reader. Delkin warns against mixing unsupported third-party cards and readers with the software because doing so may cause damage.

The Sanitize function permanently erases all data and should be used sparingly. Files must be backed up before beginning the process.

🔄 Backward-Compatible CFexpress 4.0

The card can be used in many cameras designed around the earlier CFexpress 2.0 Type B standard, although performance will be limited to the camera’s interface speed.

Always check the camera manufacturer’s compatibility information and approved-media recommendations, particularly for its most demanding RAW and high-bitrate video modes.

⚠️ Type B Compatibility

This card works only with equipment that accepts CFexpress Type B media.

It is not compatible with:

• CFexpress Type A slots

• CFast 2.0 slots

• CompactFlash slots

• SD card slots

CFexpress Type A and Type B cards are physically different and cannot be interchanged. Although CFexpress Type B resembles XQD, an XQD camera must specifically support CFexpress Type B through its hardware and firmware.

⚖️ How It Compares

Versus a CFexpress 2.0 Type B card: CFexpress 4.0 provides substantially faster potential transfer speeds with compatible readers and computers. In-camera performance may be similar when the camera uses a CFexpress 2.0 interface.

Versus Delkin POWER: The BLACK line emphasizes higher sustained performance, individual serialization and Delkin’s premium 48-hour replacement program. POWER cards provide professional performance with a different balance of speed and price.

Versus an SDXC card: CFexpress Type B offers much higher potential read, write and sustained recording speeds for intensive bursts and high-bitrate video. SDXC remains useful for less demanding formats and secondary recording when supported by the camera.

Versus CFexpress Type A: Type B is physically larger and offers greater potential bandwidth. The formats are not interchangeable, so the correct type is determined by the camera or recorder.

📦 In the Box

• Delkin Devices BLACK 1TB CFexpress Type B 4.0 memory card

• Protective storage case

• Limited lifetime warranty

• 48-hour replacement guarantee eligibility

🔗 Complete Your Workflow

Consider adding:

• Delkin USB4 CFexpress Type B 4.0 card reader

• Second CFexpress Type B card for backup or overflow

• Protective memory-card wallet

• High-speed external SSD

• USB4-compatible computer connection

• Field backup device

• Compatible SDXC card for cameras with a secondary SD slot

The Delkin Devices BLACK 1TB CFexpress Type B 4.0 card delivers the capacity, sustained speed and support demanded by professional photographers and filmmakers. Its VPG400 certification, rugged construction, CardDoc compatibility and 48-hour replacement program make it an outstanding choice when reliable storage is essential to the assignment.