Lexar High-Performance 633x 512GB microSDXC UHS-I Card w/ SD Adapter
Bottom line: The Lexar High-Performance 633x 512GB microSDXC UHS-I Card w/ SD Adapter ($99.99 on Amazon as of 2026-10-21 12:15 UTC): 512GB holds hours of 4K footage without mid-shoot card swaps; main trade-off: UHS-I caps bus speed well below UHS-II cards used by pro shooters.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 512GB holds hours of 4K footage without mid-shoot card swaps
- ✓ V30 class guarantees the sustained write floor 4K UHD recording needs
- ✓ Up to 100MB/s read speeds shorten offload time to a laptop
- ✓ A2 rating speeds app launch and random reads on Android
- ✓ SD adapter included, so it also works in DSLRs and card readers
Cons
- ✗ UHS-I caps bus speed well below UHS-II cards used by pro shooters
- ✗ Write speed is not specified; only the 100MB/s read figure is published
- ✗ A2 gains apply to Android app storage, not iPhones or cameras
- ✗ 512GB microSD carries a price premium over 128GB and 256GB tiers
Manufacturer description
Lexar's High-Performance 633x 512GB microSDXC card gives your phone, tablet, or action camera a serious storage upgrade without forcing you to manage what stays and what gets deleted. Read speeds reach up to 100MB/s over UHS-I, so pulling a day's worth of 4K clips onto a laptop doesn't stall your editing session. The V30 video speed class is the spec that matters for footage: it guarantees the sustained write floor 4K UHD recording needs, which is why this card holds up in drones and action cameras where a slower card drops frames mid-take. The A2 rating targets a different job entirely…
SpecPicks Verdict
SpecPicks scored Lexar High-Performance 633x 512GB microSDXC UHS-I Card w/ SD Adapter using a rating × review-volume × price-fit model applied to published specs and reviews across the PC & gaming hardware category. Lexar's PC & gaming hardware lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for PC & gaming hardware of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Can this card record 4K video without dropping frames?
Yes. The V30 video speed class is rated for the sustained write performance 4K UHD recording requires, and Lexar lists action cameras and drones among the intended devices.
How fast is it?
Lexar rates it at up to 100MB/s read over the UHS-I bus. Write speed is not published on this listing, so check the product page or Lexar's spec sheet if sustained write throughput is critical to your workflow.
Does it work with a regular SD card slot?
Yes. A full-size SD adapter is included, so the card fits DSLRs, laptops, and card readers that take standard SD media.
What does the A2 rating actually do for me?
A2 improves random read performance for app loading and responsiveness on Android devices that support adoptable storage. If you are only recording video or storing photos, the V30 and U3 ratings matter more.
Is it reliable enough to trust with footage I cannot reshoot?
Lexar states the card is tested for durability in harsh conditions; check the listing for current warranty terms.
Key Features
- EXPAND DEVICE STORAGE - The Lexar 512GB microSDXC card provides ample space for photos, videos, and files, ensuring you never run out of room on your smartphone, tablet, or camera.
- INCREASED PRODUCTIVITY - With read speeds up to 100MB/s, this UHS-I card accelerates file transfers and loading times, boosting your workflow efficiency for seamless performance.
- CAPTURE HIGH-QUALITY MEDIA - The V30 video speed class ensures smooth, uninterrupted 4K UHD video recording, making it perfect for action cameras, drones, and other video devices.
- VERSATILE COMPATIBILITY - Includes an SD adapter for use in a wide range of devices, from DSLRs to computers, offering flexibility and convenience across various platforms and systems.
- RELIABLE PERFORMANCE - Designed for durability, this Class 10, U3 card is tested to withstand harsh conditions, keeping your data safe and accessible wherever your adventures take you.
- OPTIMIZED APP PERFORMANCE - A2 rating allows for faster app loading and responsiveness on Android devices, providing a smoother user experience and enhanced mobile productivity.
Full Specifications
| Brand | Lexar |
|---|---|
| Color | Black |
| Model Name | Blue |
| Read Speed | 100 megabytes_per_second |
| Unit Count | 1 Count |
| Media Speed | 100 |
| Model Number | LSDMI512BBNL633A |
| Compatibility | Android |
| Warranty Type | Lifetime |
| Built-In Media | 633x 512GB MicroSD card and SD adapter |
| Item Type Name | Lexar® High-Performance 633X 512 GB microSDHC™/MicroSDXC™ UHS-I Cards |
| Mfr Part Number | LSDMI512BBNL633A |
| Flash Memory Type | Micro SDXC |
| Compatible Devices | Computers |
| Additional Features | Premium memory solution for smartphones, tablets, or action cameras |
| Warranty Description | Limited lifetime warranty for card |
| Hardware Connectivity | microSDXC |
| Item Dimensions L x W | 0.59"L x 0.43"W |
| Memory Storage Capacity | 512 GB |
| Flash Memory Video Speed Class | V30 |
| Full listing title | Lexar High-Performance 633x 512GB microSDXC UHS-I Card w/ SD Adapter, C10, U3, V30, A2, Full-HD & 4K Video, Up To 100MB/s Read, for Smartphones, Tablets, and Action Cameras (LSDMI512BBNL633A) |
Ready to buy?
Lexar High-Performance 633x 512GB microSDXC UHS-I Card w/ SD Adapter, C10, U3, V30, A2, Full-HD & 4K Video, Up To 100MB/s Read, for Smartphones, Tablets, and Action Cameras (LSDMI512BBNL633A) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
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