The SData Tool V100’s SD slot is wired for default speed (DS) mode only – 25MHz max. A $100 UHS-II card runs at the same 20 MB/s as a $10 Class 10 card. The USB port, however, benefits from a faster drive’s controller even at USB 2.0 speeds.
The biggest danger is the "false sense of space." You might think you’ve backed up important photos to a "doubled" 32GB card, only to find later that only the first 16GB of data actually exists. Is it "Better" for USB or SD Cards? sdata tool v100 double usb or sd card space better
For most SData Tool v100 typical data-logging use cases—especially battery-powered and continuous writes—a quality SDXC UHS-I (U3) card is the better choice for consistent sustained write performance, lower power consumption, and simpler software handling. Double USB is advantageous when you need larger aggregate capacity, easy physical swapping, or local redundancy, provided the device supports efficient multi-device management and power constraints are addressed. The SData Tool V100’s SD slot is wired
The SD card is convenient but slow. It offers stable space (up to 512GB) without external cables. However, for large, fragmented dumps (e.g., Android userdata partitions), the latency causes timeouts. The biggest danger is the "false sense of space
If you plug in a 4GB drive, the software makes Windows believe it is 8GB or 16GB.
: If you attempt to save more data than the physical capacity allows, the drive will begin overwriting existing files or corrupting the new ones, leading to permanent data loss. False Reporting