The USB 3.0 connections on the PRIME Z370-A board are limited to a maximum speed of 5 MB/s.

F5F Stay Refreshed Hardware Desktop The USB 3.0 connections on the PRIME Z370-A board are limited to a maximum speed of 5 MB/s.

The USB 3.0 connections on the PRIME Z370-A board are limited to a maximum speed of 5 MB/s.

The USB 3.0 connections on the PRIME Z370-A board are limited to a maximum speed of 5 MB/s.

L

LastLemon
Member

67

11-16-2017, 08:47 AM

#1

Hi everyone! I own a solid PC with a Z370-A motherboard. I'm facing issues with USB 3.0 not performing as expected. File transfers with multiple 3.0 flash drives are limited to around 5 MB/s, which is below what I'd expect. I've already checked the BIOS, updated the chipset drivers, tested all rear ports, and looked into related settings, but nothing seems to boost the speed. Have you encountered any similar problems? Besides the steps I've taken, I disabled USB Legacy Mode, which briefly improved speeds to about 10 MB/s. The flash drives didn't help, as they usually reach 40–50 MB/s on other systems. In BIOS, "XHCI Mode" is grayed out for me. All tests were done directly on the motherboard without adapters. What should I investigate next?

L

LastLemon

11-16-2017, 08:47 AM #1

Hi everyone! I own a solid PC with a Z370-A motherboard. I'm facing issues with USB 3.0 not performing as expected. File transfers with multiple 3.0 flash drives are limited to around 5 MB/s, which is below what I'd expect. I've already checked the BIOS, updated the chipset drivers, tested all rear ports, and looked into related settings, but nothing seems to boost the speed. Have you encountered any similar problems? Besides the steps I've taken, I disabled USB Legacy Mode, which briefly improved speeds to about 10 MB/s. The flash drives didn't help, as they usually reach 40–50 MB/s on other systems. In BIOS, "XHCI Mode" is grayed out for me. All tests were done directly on the motherboard without adapters. What should I investigate next?