The 256GB UHS-II SDXC Memory Card (2-Pack) from ProGrade Digital features a storage capacity of 256GB per card and takes advantage of the UHS-II bus to support maximum read speeds of 250 MB/s and maximum write speeds of 130 MB/s. This card has also been designed with the V60 Video Speed Class rating, which guarantees minimum write speeds of at least 60 MB/s, allowing the card to be used in DSLRs, mirrorless cameras, camcorders, and digital cinema cameras to produce 4K, UHD 4K, 3D, Full HD, and high bit rate MPEG-4 video. It is also well suited for raw photos and rapid-fire bursts.

UHS-II cards achieve their speed through an extra row of pins and while this card has been designed for cameras that are UHS-II / V60 compatible, it may be used in devices that do not support UHS-II / V60. However, bear in mind that this card will then default to your device's speed class and bus rating, such as UHS-II and V30, which supports minimum write speeds of 30 MB/s, or UHS-I and U3, which also supports minimum write speeds of 30 MB/s. If your device does not support U3, this card is compatible with the U1 and Class 10 standards, each of which guarantee minimum write speeds of 10 MB/s.

Built for extreme conditions, ProGrade Digital's 256GB UHS-II SDXC Memory Card (2-Pack) is able to withstand temperatures from -13 to 185°F, allowing you to take this card with you into extreme environments, such as snow and deserts. It is also X-ray proof and shockproof, and a built-in write protect switch helps to safeguard your content from being erased.

256GB Storage Capacity per Card    UHS-II / V60 / U3 / Class 10    Max Read Speed: 250 MB/s    Max Write Speed: 130 MB/s    Min Write Speed: 60 MB/s    Records 4K, UHD 4K, Full HD & 3D Video    Records High Bit Rate MPEG-4    Error Correction & Wear-Leveling    Temperature / Shock / X-Ray Proof    Built-In Write-Protect Switch

Speed tested to perform at sequential read speeds of up to 250 MB/s and sequential write speeds of up to 130 MB/s

V60 (Video Speed Class) tested and certified to perform at a minimum sustained transfer speed of 60 MB/s

Rigorous full card testing with serialized tracking of key components and manufacturing data for the high quality control

Component-level testing down to individual memory chips for improved quality

Pro level 256GB capacity

Error correction to detect and correct data write and data transfer errors

Wear-leveling for integrity and longer life

X-ray proof and shockproof

Operating temperature range of -13 to 185°F

Storage temperature range of -40 to 185°F

Related Questions and Answers

Q: 1. Is this the same as the Sandisk Extreme Pro? Since Sandisk changed their firmware for the original Blackmagic Pocket Cinema Camera I am looking for an alternative SD card to shoot RAW.

A: Hi Ayaan, If you are shooting with the Black Magic Pocket Cinema 4K you will want to use our V90 card not the V60 card. Both of those cards are available at B&H. Let us know if you have any other questions we can answer. - ProGrade Digital

Q: 2. Does this work with Fujifilm X-T4?

A: Yes, this would work with the Fujifilm X-T4.

Q: 3. Wonder how this card performs with GH5 400Mbps modes

A: I tried the 128GB version at 400Mbps on the GH5. It worked fine. I tested some 10 minute takes with no problems.

Q: 4. Will this work on a Canon 5d IV?

A: Will it work, yes. But since your camera is not UHS-II compliant, using UHS-II is a considerable waste of money.

Q: 5. Is this compatible with the Canon 6D?.. not the mark 2 but the original first one. thanks!

A: My educated guess would be Yes. But best check your camera's handbook (you know, the one that most of us forget to read). Also check out Thom Hogan's review on these cards.

Q: 6. Has anyone had experience using this card with a Nikon D850?

A: Hi John, We have tested our cards with the D850 and both the SD V60 and SD V90 cards (all capacities) perform well. Thanks for your interest in ProGrade Digital

Q: 7. Is this card compatible with PANASONIC HPX-370?

A: No. The following unit drives off of P cards SD cards are only for Scene-File Sharing.

Q: 8. will this sd work well with A6700?

A: Yes, the ProGrade Digital 128GB UHS-II SDXC Memory Card (2-Pack) is very good for the Sony a6700.

Q: 9. Are these cards 128GB each per card or 2 cards of 64GB each totalling 128GB? The description in the write up is confusing.

A: This is 2 x 128gb cards.

Q: 10. Has anyone tried GH5 recording 422/10bit/ALL-I with this SDXC card? Theoretically it should work, but in real situation does this work?

A: Only had these for a few days, but I've filled two cards using our Panasonic EVA1 with the same/similar 400Mb/s codec and they've been flawless.