Review on Sabrent USB 3.0 Super Speed 4 Slot Memory Card Reader (CR-BMC3) for Windows, Mac, and Linux - Enhanced Compatibility with SD, SDHC, SDXC, MMC/MicroSD, T-Flash/MS, MS PRO Duo/CF, and More by Jeremy Romero

Everything worked perfectly for the first few months. It connects to your computer with no hiccups and loads fairly quickly. However, since about 2 weeks about 1 in 300 or 400 photos uploaded is corrupted. This is especially true for RAW files. This is not my card as I have tried several and can go back and re-download the corrupted file and it works fine. The problem is that the corruption doesn't show up until I sort the images and preview them from the RAW data in Lightroom. If it takes me a few weeks to crop and edit photos, I usually format the memory card for the next shoot. A good card reader, maybe mine, is unique, but such a discrepancy is dangerous for a professional shooter.