SanDisk 128GB Extreme microSDXC UHS-I Memory Card with Adapter (SDSQXA1-128G-GN6MA)
Bottom line: The SanDisk 128GB Extreme microSDXC UHS-I Memory Card with Adapter ($38.95 on Amazon as of 2026-10-06): Up to 160MB/s read speeds cut 4K footage offload time; main trade-off: 160MB/s read needs a UHS-I compatible reader or device to hit.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Up to 160MB/s read speeds cut 4K footage offload time
- ✓ U3 and V30 ratings meet 4K UHD sustained-write requirements
- ✓ A2 rating targets faster app launches and in-game load times
- ✓ Up to 90MB/s writes keep burst shooting from stalling
Cons
- ✗ 160MB/s read needs a UHS-I compatible reader or device to hit
- ✗ 90MB/s write is below top-tier V60/V90 cards for high-bitrate video
- ✗ A2 gains depend on the host device supporting the A2 command set
- ✗ 128GB fills fast at 4K bitrates compared to 256GB and 512GB options
Manufacturer description
Up to 160MB/s read speeds to save time transferring high res images and 4K UHD videos (2); Requires compatible devices capable of reaching such speeds Up to 90MB/s write speeds for fast shooting; Requires compatible devices capable of reaching such speeds 4K UHD and Full HD Ready with UHS speed class 3 (U3) and video speed class 30 (V30)
SpecPicks Verdict
SpecPicks scored SanDisk 128GB Extreme microSDXC UHS-I Memory Card with Adapter using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Sandisk's external storage 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 external storage 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
Is this microSD card fast enough for 4K video recording?
Yes. It carries UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings, which are the sustained-write tiers cameras and drones require for 4K UHD, and SanDisk rates write speeds up to 90MB/s.
Does the SanDisk Extreme work in a Steam Deck, Switch, or Raspberry Pi?
It is a standard microSDXC card with an A2 application performance rating, which targets faster random reads for app and game loading. Confirm the card format your specific device supports on the product listing before ordering.
Does it come with a full-size SD adapter?
Yes, this SKU (SDSQXA1-128G-GN6MA) ships with a microSD-to-SD adapter, so you can use it in cameras, laptops, and card readers that take full-size SD.
Will I actually get 160MB/s read speeds?
Only with a device or card reader capable of reaching those speeds. SanDisk notes that both the up-to-160MB/s read and up-to-90MB/s write figures require compatible hardware; older USB 2.0 readers will be the bottleneck.
How durable is this card?
SanDisk states the Extreme line is built for and tested in harsh conditions, rated temperature proof, water proof, shock proof, and X-ray proof. Check the product listing for current warranty terms.
Key Features
- Up to 160MB/s read speeds to save time transferring high res images and 4K UHD videos (2); Requires compatible devices capable of reaching such speeds
- Up to 90MB/s write speeds for fast shooting; Requires compatible devices capable of reaching such speeds
- 4K UHD and Full HD Ready with UHS speed class 3 (U3) and video speed class 30 (V30)
- Rated A2 for faster loading and in app performance
- Built for and tested in harsh conditions: Temperature Proof, Water Proof, shock Proof and x ray Proof
- Get the SanDisk memory zone app for easy file management (available on Google Play)
Full Specifications
| Size | 128GB |
|---|---|
| Brand | Sandisk |
| Color | Red |
| Model | SDSQXA1-128G-GN6MA |
| Warranty | Lifetime Limited Warranty |
| UnitCount | 1 |
| ReleaseDate | 2019-01-08T00:00:01Z |
| Manufacturer | Sandisk Technologies, Inc. |
| IsAdultProduct | false |
| ItemPartNumber | SDSQXA1-128G-GN6MA |
| Full listing title | SanDisk 128GB Extreme microSDXC UHS-I Memory Card with Adapter - Up to 160MB/s, C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-128G-GN6MA |
Ready to buy?
SanDisk 128GB Extreme microSDXC UHS-I Memory Card with Adapter - Up to 160MB/s, C10, U3, V30, 4K, A2, Micro SD - SDSQXA1-128G-GN6MA 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 2026-10-06. Price and availability subject to change.
Read our analysis
SpecPicks coverage that features this External Storage.
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- Best Retro Handhelds in 2026 — From $35 to $500
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- How to Build a Windows 98 Retro PC in 2026
- Best 1440p Gaming GPUs in 2026
- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
More reviews from the SpecPicks archive
Browse all reviews →- BOSGAME VTA-439: A Linux-Friendly Ryzen AI 9 HX 470 Mini PC
- Best Plug-and-Play Retro Gaming Consoles in 2026: 5 Picks
- Steam Deck OLED vs ROG Ally Z1 Extreme: 2025 Comparison
- Glide vs OpenGL vs Direct3D: The API War That DirectX 9 Ended
- NVMe vs SATA SSD for Local LLM Model Libraries in 2026
- Retro Game Emulators for iPhone: What Works in 2026
- AMD Ryzen AI Max+ 395 vs Mac Studio M4 Max for Local LLM Inference
- Best Internal SSD for a PS4 Pro Upgrade: 2.5" SATA Picks That Cut Load Times
- Raspberry Pi 5 IOMMU Driver Lands for the Mainline Linux Kernel
- How to run Qwen 3 32B on NVIDIA GeForce RTX 3090
- Best USB Microphone for Streaming in 2026: HyperX QuadCast 2 vs Blue Yeti
- DeepSeek on the US Entity List: Running V4 Locally in 2026
- Logitech G29 vs HORI vs Thrustmaster: Best Sim Racing Wheel for Beginners
- Build a Silent Win98 Retro PC with CompactFlash Storage (2026)
- Qwen 3.6 vs Frontier Models on a Local Rig: The Honest Gap
- Best Capture Device for Recording Retro Consoles and Old PCs in 2026
- Best 1TB SATA SSD for Cloning Old Drives and OS Migrations 2026
- Crucial BX500 vs Samsung 870 EVO for an Emulation Box
- Jan.ai vs LM Studio vs Ollama: Easiest Local-LLM App for a 12GB Card in 2026
- Logitech G502 Hero vs MK270 Combo: Best PC Setup for Sub-$50
- When a Game Boy Clone Runs Too Fast: The Crystal-Swap Fix Behind a Viral Repair
- 50+ Raspberry Pi Project Ideas for 2025 (By Skill Level)
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 4090
- Advanced Raspberry Pi Projects for Adults (2026 Guide)
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090