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VIA USB 3.0 Ports Slow on Gigabyte GA-Z77X-UD5H M'board

Steve C

Member
Power User
I have a Seagate 2TB external USB 3.0 hard drive, Gigabyte GA-Z77X-UD5H motherboard and Windows 8.1 x64. I believe all drivers are up to date. I get a good read/write speed c. 115MB/sec when connecting the Seagate disk to an Intel USB 3.0 port on my PC front panel but I only get a read/write speed of c. 35MB/sec when I connect to the rear panel blue VIA USB 3.0 ports. I want to use the rear VIA USB connection. Is the low performance from the VIA USB 3.0 ports normal and if not, what driver or BIOS configuration should I be using to get the best USB 3.0 transfer speed?
 

My Computer

System One

  • OS
    Windows 8.1 64 bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home Build
    CPU
    Intel i3570K
    Motherboard
    Gigabyte GA-77X-UD5H
    Memory
    16 GB
    Graphics Card(s)
    Sapphire R9 280X Toxic
    Sound Card
    Realtek on motherboard
    Monitor(s) Displays
    Viewsonic VP2770
    Screen Resolution
    2560 x 1440
    Hard Drives
    Intel 520 180GB SSD
    Seagate 2T HDD
    Seagate external 1T USB HDD
    PSU
    XFX 850W
    Case
    Nanoxia Deep Silence 1
    Cooling
    Noctua NH-D14
    Keyboard
    Microsoft
    Mouse
    Microsoft
    Internet Speed
    50Mbps
    Browser
    Chrome
    Country Flag
    UK
    State/Region Flag
    uk yorkshire

Itaregid

Banned
It is important to note there is no mandatory color coding for USB ports. While blue ports often designate USB 3.0, manufacturers can use any color for any version they want.

Are you using the same cable front and back? Note that USB 3.0 devices need USB 3.0 cables to realize maximum throughput.
 

My Computer

System One

  • OS
    W10 Pro
    Computer type
    PC/Desktop

fireberd

Beach Observer
VIP Member
Pro User
I used to have that motherboard. I had so much trouble with the board, including the USB 3.0 ports that I finally gave up and replaced it with a different brand. I even sent the board back (under warranty) for repair and it looked like they gave me a replacement board, that developed USB 3.0 problems (along with another CPU problem).
 

My Computer

System One

  • OS
    Win 10
    Name
    Jack Stoner
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home Built
    CPU
    i7 6700K
    Motherboard
    ASUS ROG Maximus VIII Hero
    Memory
    16 Gb G Skill TridentZ DDR4 3400
    Graphics Card(s)
    Intel (i7 CPU)
    Sound Card
    RealTek Integrated
    Monitor(s) Displays
    27" Dell SE2717HR
    Screen Resolution
    1920X1080
    Hard Drives
    500GB Samsung 850 SSD, 3TB for backups
    PSU
    EVGA Supernova 750 G2
    Occupation
    Retired
    Case
    BeQuiet Silent Base 600
    Cooling
    Deepcool Captain 120EX
    Keyboard
    Microsoft Wireless
    Mouse
    Logitech wireless
    Internet Speed
    Cable - 100MB Downlink
    Browser
    Edge/Firefox
    Antivirus
    Microsoft
    Other Info
    Sonar Platinum 64 bit recording studio software with MOTU 896Mk3 Hybrid recording interface unit.
    Country Flag
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    us florida

Steve C

Member
Power User
I'm definitely using the VIA USB 3.0 ports on the rear panel and I'm using the USB 3.0 cable supplies with the Seagate Expansion drive.
 

My Computer

System One

  • OS
    Windows 8.1 64 bit
    Computer type
    PC/Desktop
    System Manufacturer/Model
    Home Build
    CPU
    Intel i3570K
    Motherboard
    Gigabyte GA-77X-UD5H
    Memory
    16 GB
    Graphics Card(s)
    Sapphire R9 280X Toxic
    Sound Card
    Realtek on motherboard
    Monitor(s) Displays
    Viewsonic VP2770
    Screen Resolution
    2560 x 1440
    Hard Drives
    Intel 520 180GB SSD
    Seagate 2T HDD
    Seagate external 1T USB HDD
    PSU
    XFX 850W
    Case
    Nanoxia Deep Silence 1
    Cooling
    Noctua NH-D14
    Keyboard
    Microsoft
    Mouse
    Microsoft
    Internet Speed
    50Mbps
    Browser
    Chrome
    Country Flag
    UK
    State/Region Flag
    uk yorkshire

Itaregid

Banned
Don't know what to say then. I have a sibling Z77X-D3H and it works fine, front and back. Do you have any other USB devices connected in back that may be hogging bandwidth?
 

My Computer

System One

  • OS
    W10 Pro
    Computer type
    PC/Desktop

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