Weak USB ports?
Weak USB ports?
I've been experiencing problems with my USB ports recently. They function but are slow and deliver low power. I tested all of them the other day, and they consistently give me a 7.5-hour charging time for my Samsung S25. Even the yellow lightning ports on the top of the case work fine. When I upgraded my phone earlier this year, backing up files to my PC was fast initially but then slowed down significantly, sometimes stopping completely before restarting again. I'm not sure what's happening and would appreciate your assistance.
I've been experiencing problems with my USB ports for some time now. How long would it take? - MSI B550 A-PRO motherboard
What BIOS version are you using for your motherboard?
It would transfer quickly for a minute then slow down significantly, almost stopping occasionally before resuming and slowing again.
The speeds would vary based on the files being moved from the phone to the drive, as well as the destination drive.
How extended would that process be? After upgrading my PC in 2024 with the b550, nvme drives, CPU, GPU, and PSU, I'm curious about the BIOS version on my motherboard. The transfer speeds would vary based on the files being moved and the destination drive. I was moving photos, videos, documents, downloads—everything. Initially, I thought transferring to a 2TB HDD, then switching to NVMe, but it remained slow. With only 128GB of storage at the time, it wouldn't seem like hours would pass for transferring around 100GB?
I notice they all perform poorly, with no significant improvement in transfer speed or power among them...
Even with 5Gbps speeds, one might expect to transfer 100GB in an hour... I carefully reviewed my system settings and couldn't locate any battery charging options! Appreciate the advice!
Check if write caching is active on the storage device. Also, confirm compatibility of the phone with another computer.
I updated my setup in 2024 with the b550, nvme, CPU, GPU, and PSU. Was there a platform change? Did you reinstall the operating system or just move it from the previous system to the new one?
This pattern occurs during file transfers between devices and while checking speeds in Windows File Explorer. It's particularly noticeable when saving files to inexpensive USB3 memory cards and SD cards. These devices can read at a quick 60MB/s, but the average for ongoing writes drops below 10MB/s. This is convenient for skipping higher quality cards.
Initially, file transfers on any storage can appear very fast until the receiving device's buffer becomes full. After that, performance slows or stops entirely as data spills into slower memory. This happens with spinning hard drives and SSDs. When the drive's buffer reaches capacity, speed decreases.
I tend to move data more efficiently when I remove the microSD card from my phone and plug it directly into the PC using a USB3 card reader. My Samsung phone's CPU can become overwhelmed during large transfers.
I've learned to be tolerant and accept slower speeds when moving files between the phone's internal memory and the microSD card in a reader.
Using a standard USB2 Type A port limits current to 500mA. With a standard USB3 Type A port, it rises to 900mA. Excluding special fast-charging ports, most computers don't support them.
When connecting my phone via a regular USB2 port and using the Ampere app, I often see charging currents between 200 and 300mA. That's quite low.
With a proper mains charger, the Ampere app displays much higher currents—around 2,000mA to 3,000mA depending on the charger. Charging from the computer only occurs when I forget the dedicated charger.
I suggest using the Ampere app to compare the performance of different USB sources.
https://play.google.com/store/apps/detai...e&hl=en-US
USB-C ports intelligently adjust charging current and voltage based on the connected device.
https://www.makeuseof.com/tag/usb-pd-pow...y-charger/
For quicker phone charging, opt for a dedicated charger.
Unfortunately, standard USB ports simply can't deliver sufficient power.
The 5Gbps speed is the theoretical maximum for a specific USB port. Real-world speeds depend on the slowest device in the connection.
Dividing 5Gbps by 8 bits gives around 625MB/s. You might see up to 625MB/s between a portable SSD and a high-quality NVMe drive in a PC, but it's not reliable.
Most phone processors lack the power to handle large data transfers over USB at high speeds. That's just the way it is.
Be patient or save your phone data on fast, removable media (like microSD) before disconnecting and using a UHS II reader.
https://www.amazon.com/Samsung-Express-m...B0FT99KCV8
https://www.amazon.com/SAMSUNG-Ultimate-...B0CF82B8NN