📋 Key Specifications & Features (SanDisk microSD Express)
Parameter | Details / Typical Values
| Product Line | SanDisk microSD Express (PCIe NVMe + UHS‑I backward compatibility)
| Interface / Bus | PCIe Gen 3 NVMe + UHS‑I (i.e. Express + backward compatibility)
| Form Factor | microSD / microSDXC (depending on capacity)
| Max Sequential Read | Up to \~ 880 MB/s
| Max Sequential Write | - 128 GB: up to \~ 480 MB/s <br> - 256 GB: up to \~ 650 MB/s - 512 GB: up to \~ 650 MB/s
| Sustained Write (Minimum) | 128 GB: \~ 100 MB/s 256 GB: \~ 210 MB/s 512 GB: \~ 220 MB/s
| Speed Class / Ratings | UHS Speed Class U3, Class 10, A1 app performance
| Dimensions (L × W × H) | 14.99 mm × 10.92 mm × 1.02 mm
| Weight | \~ 0.26 g
| Operating Temperature | –25 °C to 85 °C (–13 °F to 185 °F)
| Non‑Operating / Storage Temperature | –40 °C to 85 °C
| Warranty | Lifetime limited warranty (region dependent)
| Durability & Protection | Waterproof, temperature proof, humidity proof, shock/drop proof, magnetic & X‑ray proof, wear‑out proof
| Compatibility | Supports microSD Express, also works in UHS‑I and UHS‑II devices (but in those cases, limited to UHS‑I speeds when Express interface not supported)
| Notable Features | - SanDisk **ThermAdapt** for thermal regulation (to avoid overheating) <br> - High burst / sustained recording suitable for high resolution video (5.3K, 4K)