Huawei's NM (Nano Memory) card is a proprietary storage format the same size as a nano SIM card — it slots directly into the SIM card tray on compatible devices. The Lexar NM Card 512GB – Nano Memory Card for Huawei (Up to 90MB/s Read) is the largest capacity NM card available and is DFH (Design For Huawei) certified — the only certification that confirms full compatibility and performance validation across Huawei and Honor devices. At 90MB/s read and 85MB/s write on the eMMC 5.1 protocol, it handles 4K video recording, high-resolution continuous photography and fast app data writes without bottlenecking the camera. For Huawei Mate, P, Nova and Enjoy series users whose internal storage is running low, this is the only way to add 512GB of storage without changing the device. Lexar's product has been tested in over 1,100 devices in Lexar Quality Labs and verified by Huawei's own laboratory — it is the only NM Card brand sold in Huawei's own retail stores.

NM Card Format
Nano SIM Size — Built Into the Phone
The NM Card format was developed by Huawei as a storage expansion standard that shares the nano SIM card slot. It is 34% smaller than a microSD card — the same size as the nano SIM in your phone right now. On devices with a dual SIM tray, one SIM slot can be repurposed for an NM card, or the NM card and SIM can coexist in supported dual nano SIM + NM tray configurations. This integration means storage expansion does not require a separate memory card slot or any modification to the device — the phone's existing hardware supports it. No adapter, no protrusion, no compromise on the phone's IP rating or physical design.

Performance
90MB/s Read · 85MB/s Write · 4K Ready
90MB/s sequential read and 85MB/s sequential write on the eMMC 5.1 protocol gives the NM Card sufficient bandwidth for 4K video recording at 60fps, 1080p slow-motion capture and rapid continuous photo bursts without the camera buffer stalling. For comparison, a standard microSD Class 10 card writes at 10MB/s minimum — this NM Card writes at nearly nine times that rate. File transfers to a computer are handled via Lexar's NM Card reader (sold separately), which connects via USB. Speeds are consistent across the 512GB capacity — performance does not degrade as the card fills.

DFH Certified
Huawei + Lexar Lab Verified
DFH (Design For Huawei) certification is Huawei's own compatibility validation programme for third-party accessories. The Lexar NM Card is the only NM Card to achieve DFH certification — confirmed by both the Lexar Quality Lab (over 1,100 test devices) and Huawei's own laboratory. This certification guarantees that the card will perform correctly across supported Huawei device models, including correct recognition, stable read/write speeds and reliable long-term operation. Lexar's NM Card is also the only NM Card brand stocked in Huawei's own retail stores and Huawei Mall, with a documented 98% positive rating across Huawei's retail channels.

Great choice if you…
✔ Own a compatible Huawei or Honor smartphone or tablet
✔ Need maximum storage expansion — 512GB in a single card
✔ Record 4K video or shoot high-res photo bursts on your Huawei device
✔ Want DFH-certified compatibility — tested by Huawei and Lexar labs
✔ Want 3-year warranty coverage on your storage card

Consider something else if…
✖ Your device uses microSD — NM cards are Huawei/Honor exclusive
✖ You need a card reader for PC transfer — sold separately
✖ Your Huawei device does not have NM card slot support — check your model below

NM Card compatibility check: NM Cards only work in Huawei and Honor devices with a dedicated NM Card slot. Not all Huawei models support NM Cards — please verify your specific device model in your phone's user manual or Huawei's official website before ordering. Key compatible series include: Huawei Mate 20 / 30 / 40 / 50 / 60 series, P30 / P40 / P50 series, Nova 5 / 6 / 7 / 8 series, and select MateBook and MatePad models.

Technical Specifications

Brand / Model
Lexar NM Card 512GB

Capacity
512GB

Read Speed
Up to 90MB/s

Write Speed
Up to 85MB/s

Protocol
eMMC 5.1

Form Factor
NM Card (Nano Memory) — nano SIM size

Certification
DFH (Design For Huawei) certified

Video
4K and 1080P recording supported

Warranty
3 Years (Lexar)

Box Contents

—Lexar NM Card 512GB
—Card reader not included — sold separately

Compatible With (key models)

—Huawei Mate 20 / 30 / 40 / 50 / 60 series
—Huawei P30 / P40 / P50 series
—Huawei Nova 5 / 6 / 7 / 8 series
—Huawei Enjoy series (select models)
—Huawei MateBook (select models)
—Huawei MatePad / MateBook Pro (select models)
—Select Honor smartphones and tablets

Condition
Brand New — Retail Packaging

Warranty
3 Years Lexar

Delivery
4–5 Working Days · Fully Tracked

Browse the full memory card range at maibo.

Huawei’s NM (Nano Memory) card is a proprietary storage format the same size as a nano SIM card — it slots directly into the SIM card tray on compatible devices. The Lexar NM Card 512GB – Nano Memory Card for Huawei (Up to 90MB/s Read) is the largest capacity NM card available and is DFH (Design For Huawei) certified — the only certification that confirms full compatibility and performance validation across Huawei and Honor devices. At 90MB/s read and 85MB/s write on the eMMC 5.1 protocol, it handles 4K video recording, high-resolution continuous photography and fast app data writes without bottlenecking the camera. For Huawei Mate, P, Nova and Enjoy series users whose internal storage is running low, this is the only way to add 512GB of storage without changing the device. Lexar’s product has been tested in over 1,100 devices in Lexar Quality Labs and verified by Huawei’s own laboratory — it is the only NM Card brand sold in Huawei’s own retail stores.

NM Card Format
Nano SIM Size — Built Into the Phone
The NM Card format was developed by Huawei as a storage expansion standard that shares the nano SIM card slot. It is 34% smaller than a microSD card — the same size as the nano SIM in your phone right now. On devices with a dual SIM tray, one SIM slot can be repurposed for an NM card, or the NM card and SIM can coexist in supported dual nano SIM + NM tray configurations. This integration means storage expansion does not require a separate memory card slot or any modification to the device — the phone’s existing hardware supports it. No adapter, no protrusion, no compromise on the phone’s IP rating or physical design.

Performance
90MB/s Read · 85MB/s Write · 4K Ready
90MB/s sequential read and 85MB/s sequential write on the eMMC 5.1 protocol gives the NM Card sufficient bandwidth for 4K video recording at 60fps, 1080p slow-motion capture and rapid continuous photo bursts without the camera buffer stalling. For comparison, a standard microSD Class 10 card writes at 10MB/s minimum — this NM Card writes at nearly nine times that rate. File transfers to a computer are handled via Lexar’s NM Card reader (sold separately), which connects via USB. Speeds are consistent across the 512GB capacity — performance does not degrade as the card fills.

DFH Certified
Huawei + Lexar Lab Verified
DFH (Design For Huawei) certification is Huawei’s own compatibility validation programme for third-party accessories. The Lexar NM Card is the only NM Card to achieve DFH certification — confirmed by both the Lexar Quality Lab (over 1,100 test devices) and Huawei’s own laboratory. This certification guarantees that the card will perform correctly across supported Huawei device models, including correct recognition, stable read/write speeds and reliable long-term operation. Lexar’s NM Card is also the only NM Card brand stocked in Huawei’s own retail stores and Huawei Mall, with a documented 98% positive rating across Huawei’s retail channels.

Great choice if you…
✔ Own a compatible Huawei or Honor smartphone or tablet

✔ Need maximum storage expansion — 512GB in a single card

✔ Record 4K video or shoot high-res photo bursts on your Huawei device

✔ Want DFH-certified compatibility — tested by Huawei and Lexar labs

✔ Want 3-year warranty coverage on your storage card

Consider something else if…
✖ Your device uses microSD — NM cards are Huawei/Honor exclusive

✖ You need a card reader for PC transfer — sold separately

✖ Your Huawei device does not have NM card slot support — check your model below

NM Card compatibility check: NM Cards only work in Huawei and Honor devices with a dedicated NM Card slot. Not all Huawei models support NM Cards — please verify your specific device model in your phone’s user manual or Huawei’s official website before ordering. Key compatible series include: Huawei Mate 20 / 30 / 40 / 50 / 60 series, P30 / P40 / P50 series, Nova 5 / 6 / 7 / 8 series, and select MateBook and MatePad models.

Technical Specifications

Brand / ModelLexar NM Card 512GB
Capacity512GB
Read SpeedUp to 90MB/s
Write SpeedUp to 85MB/s
ProtocoleMMC 5.1
Form FactorNM Card (Nano Memory) — nano SIM size
CertificationDFH (Design For Huawei) certified
Video4K and 1080P recording supported
Warranty3 Years (Lexar)

Box Contents

—Lexar NM Card 512GB
—Card reader not included — sold separately

Compatible With (key models)

—Huawei Mate 20 / 30 / 40 / 50 / 60 series
—Huawei P30 / P40 / P50 series
—Huawei Nova 5 / 6 / 7 / 8 series
—Huawei Enjoy series (select models)
—Huawei MateBook (select models)
—Huawei MatePad / MateBook Pro (select models)
—Select Honor smartphones and tablets

Condition
Brand New — Retail Packaging

Warranty
3 Years Lexar

Delivery
4–5 Working Days · Fully Tracked

Browse the full memory card range at maibo.