SanDisk Extreme 128GB microSDXC UHS-I Memory Card with Adapter | 190MB/s Read, 90MB/s Write

• Compatible with Nintendo-Switch (NOT Nintendo-Switch 2)
• Save time with card offload speeds of up to 190MB/s powered by SanDisk QuickFlow Technology (Up to 190MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, requires compatible devices capable of reaching such speeds. Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes. SanDisk QuickFlow Technology is only available for 64GB, 128GB, 256GB, 400GB, 512GB, and 1TB capacities. 1GB=1,000,000,000 bytes and 1TB=1,000,000,000,000 bytes. Actual user storage less.)
• Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately)
• Up to 90MB/s write speeds for fast shooting (Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes.)
• 4K and 5K UHD-ready with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (Compatible device required. Full HD (1920x1080), 4K UHD (3840 x 2160), and 5K UHD (5120 X 2880) support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site. UHS Speed Class 3 (U3) designates a performance option designed to support real-time video recording with UHS-enabled host devices. Video Speed Class 30 (V30), sustained video capture rate of 30MB/s, designates a performance option designed to support real-time video recording with UHS-enabled host devices. See the SD Association’s official website.)
• Rated A2 for faster loading and in-app performance (A2 performance is 4000 read IOPS, 2000 write IOPS. Results may vary based on host device, app type and other factors)

• Gently insert the SanDisk Extreme microSDXC card into the designated slot on your smartphone, camera, drone, or Nintendo Switch. Ensure it clicks securely into place. Use the included adapter for devices with a standard SD card slot. — Insert Card into Device
• For optimal performance and compatibility, format the card using your device's built-in formatting tool. This is especially recommended when using the card for the first time or switching between different types of devices. — Format Card (If Necessary)
• Begin transferring photos, videos, apps, or games. For recording, select the microSD card as your storage location in your device's settings. Enjoy fast write speeds for capturing high-resolution content. — Transfer Files or Record Media
• Before removing the card, always use your device's 'eject' or 'safely remove hardware' function to prevent data corruption. Connect the card (or adapter) to your computer to transfer files using its high read speeds. — Safely Eject and Transfer Data

Typical situations where SanDisk Extreme 128GB microSDXC UHS-I Memory Card with Adapter | 190MB/s Read helps — illustrative scenarios, not customer reviews.