🔋 The power output of the USB port is not high enough to support transfer at maximum speed.⚠️ Unreliable USB connection, insufficient bandwidth, and signal interference with other USB devices.There are many reasons for this problem, such as: Frequently Asked Questions Why is My Flash Drive So Slow on Mac?Ĭopying files from a Mac to a USB drive is often a tedious process, especially when the speed is languid. How to Recover USB Flash Drive Files after Format/Delete on Mac Part4. 6 Ways to Speed Up USB Transfer on Mac Part3. Why is My Flash Drive So Slow on Mac? Part2. This post will show 6 effective solutions to fix Mac USB transfer very slowly. If you're going to solve a problem like this, then you need a way to speed up flash drive transfer or copy files on Mac. However, are you experiencing USB transfer file delays on your Mac? It's incredibly frustrating when the transfer takes much longer than expected, and you're stuck staring at the progress bar, waiting to be done. To transfer files between devices, a USB drive is an excellent option. Updated to Troubleshooting Tips by William on | Approved by Daryl Baxter

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