FAQs
Which cards and capacities are supported? Any limits?
Most models support SD/SDHC/SDXC and microSD/microSDHC/microSDXC (UHS‑I). Practical capacity depends on OS/file system: exFAT is recommended for cards ≥64GB, FAT32 for ≤32GB. Some older cameras/cards use proprietary formats; check your device manual. If you need UHS‑II/CFexpress/CF/MS, choose a reader explicitly listing those formats.
My computer/phone doesn’t detect the card. How do I fix it?
1) Reinsert the card firmly; unlock the write‑protect tab.
2) Try another USB port/cable/adapter; avoid USB hubs when debugging.
3) On Windows, open Disk Management to see if a drive appears but lacks a letter; assign one.
4) Check the card with another device/camera.
5) Back up and reformat to exFAT/FAT32 if the file system is corrupted.
6) For phones/tablets, ensure OTG/external storage is supported and grant file permissions to the Files app.
Transfer speed is slow. What impacts speed and how to improve it?
Speed is limited by:
(a) card grade (U1/U3/V30/V60)
(b) reader/port spec (USB 2.0 vs USB 3.x)
(c) the device’s storage performance
(d) file pattern (many small files are slower).
To improve: use U3/V30+ cards, connect to a USB 3.x port, use short high‑quality cables, copy in batches, and avoid running antivirus scans during transfers.
Can I import 4K/RAW from cameras to iPhone/iPad/Android directly?
Yes, if the device OS and app support those formats. iOS/iPadOS Photos can import from DCIM; for non‑DCIM RAW/video folders, use Files or a 3rd‑party app. Android devices need OTG and a file manager; some gallery apps only index DCIM. For very large files, ensure sufficient free space and external power if needed.
Two cards inserted—can the reader access both at the same time?
Our card reader supports multiple card types (e.g., SD/SDHC/SDXC and microSD/microSDHC/microSDXC, UHS-I), but it reads one card at a time.
If two cards are inserted, the system will mount only the default/first-detected slot and ignore the other. For best stability, insert and read one card at a time; when switching cards, please perform Safely Remove/Eject before swapping.
Tip: For cards ≥64 GB, we recommend exFAT. Works with Windows/macOS; USB-C phones/tablets need OTG/external storage support.
Will using a reader corrupt my data? How to avoid data loss?
Normal use is safe. Always wait for transfers to finish and eject the drive before unplugging. Avoid removing cards while cameras are writing. Keep backups—flash media has a finite write life. If files go missing, stop writing new data and run recovery software on a PC.
Does the reader support UHS‑II or CFexpress for faster speeds?
Only if explicitly listed. UHS‑II uses extra pins and requires a matching UHS‑II reader; it falls back to UHS‑I on non‑UHS‑II readers. CFexpress requires a dedicated reader (often USB 3.2 Gen2/Thunderbolt). Please refer to the description on the product details page.
My phone shows files but can’t open them. Why?
Meybe a format/codec issue (e.g., proprietary RAW, high‑bit‑rate codec). Install apps that support your camera format (e.g., Lightroom for RAW, VLC for many video codecs). Alternatively, transfer to a PC/Mac to convert to a compatible format.
Will the reader work through a USB hub or dock?
Usually yes, but performance may drop if other high‑bandwidth devices compete. For critical ingest, connect the reader directly to a USB 3.x port. If using a phone/tablet, ensure the hub provides sufficient power and OTG support.
Which file system should I use—FAT32, exFAT, NTFS?
For cross‑platform camera/phone/PC use, exFAT is best (supports >4GB files). FAT32 is widely compatible but limits files to 4GB. NTFS is great for Windows but write support may be limited on other OSes without extra drivers.