
Angelbird has introduced the AV PRO SE CFexpress B v4 cards, which are based on the latest CFexpress v4 Type B technology. Capacities include 512GB, 1TB, 2TB, and 4TB, and with sustained write speed up to 3150 MB/s, these high-speed cards can support filming up to 12K + RAW video. Let’s dive in!
Based in Austria, Angelbird released a variety of storage media, including the AV PRO CFexpress Type A SE cards for Sony Alpha and FX cameras last November. Additionally, the company unveiled the Angelbird Card Readers PKT with USB 3.2 and options for CFexpress Type A and Type B along with SD.

Angelbird AV PRO SE CFexpress B v4 cards – features
The AV PRO SE CFexpress B v4 card doubles the speed of the previous CFexpress v2 Type B card, delivering a sustained write speed of up to 3150 MB/s (2 TB / 4 TB). It can support 12K + RAW filming with fast offloading.
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Features include:
- CFexpress v4 Type B technology with advanced PCIe 4.0 interface, supporting up to 12K + RAW video and high-speed burst photography.
- Sustained write speed of up to 3150 MB/s.
- Maximum read speed up to 3700 MB/s and maximum write speed up to 3500 MB/s.
- Stable Stream offers consistent recording performance throughout the entire capacity of the card.
- Capacities include 512 GB, 1 TB, 2 TB, and 4 TB.
- Advanced Thermal Management helps to protect the cards from overheating along with shooting in more extreme environments. Withstands temperatures from 12°C to 72°C (10°F to 162°F).
- Backward compatible with all camera models using CFexpress Type B memory card formats. These also include legacy and off-market models.
- In-house data recovery service on hard- and software-level.
- 3-year limited warranty, which must be activated within 30 days of purchase.

There are some differences in the performance between the capacities:
- 512GB
Maximum speeds: Read: 3700 MB/s, Write: 1100 MB/s
Sustained speeds: Read: 3500 MB/s, Write: 1050 MB/s - 1TB
Maximum speeds: Read: 3700 MB/s, Write: 2300 MB/s
Sustained speeds: Read: 3500 MB/s, Write: 2100 MB/s - 2TB and 4TB
Maximum speeds: Read: 3700 MB/s, Write: 3500 MB/s
Sustained speeds: Read: 3500 MB/s, Write: 3150 MB/s
Price and availability
The new Angelbird AV PRO SE CFexpress B v4 cards are available now, and pricing is as follows (not including tax):
- 512GB: $179.99 / €179.99
- 1TB: $299.99 / €299.99
- 2TB: $599.99 / €599.99
- 4TB: $1,199.99 / €1,199.99
You can learn more about the new AV PRO SE CFexpress B v4 cards on Angelbird’s website.
Are you using Angelbird’s products? What are your thoughts on the new AV PRO SE CFexpress B v4 cards? Please let us know in the comments below!