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Motherboard USB 3.0 header question

Last response: in Motherboards
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March 15, 2014 8:02:58 AM

Hi, I have the ASRock Z87 Extreme9 a/c but this questions applies to any motherboard, I suppose.

The Extreme9 comes with a WLAN that occupies a front drive bay. It also has 4 x USB 3.0 ports and a single SD card hole.

However, there is only one lead to the USB 3.0 header on the board. I have read that USB 3.0 headers can only ever manage 2 x USB 3.0 sockets.

My question is to ask whether only two of the panel USB sockets will work?
a b V Motherboard
March 15, 2014 8:13:27 AM

USB Header is for the front USB port on the case and the 4x USB 3.0 are on the back I\O panel. Controlled differently. So you have 1 front usb from the USB header and 4 back usb from back I/O.
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March 15, 2014 12:37:09 PM

Thanks for responding, but I didn't make myself clear.

1. The board has 6 x USB 3.0 slots on the back I/O
2. The WLAN unit in the front 5.25" drive bay adds another 4 USB 3.0
3. My Arc Midi R2 case adds another 2 x USB 3.0

Total of 12 and yeah I know, I'll never use them all!!

So the 6 USB 3.0 ports on the back I/O, are OK and will work, no probs.

The issue is about the 4 x USB 3.0 on the 5.25" front bay WLAN unit and the 2 USB 3.0 on the case.

As I said, the board has 2 x USB 3.0 headers
The Case has one USB 3.0 connector cable for 2 USB 3.0. Should be OK.
The WLAN bay unit has ONLY ONE USB 3.0 connector cable for 4 x USB 3.0. Can all 4 work off one cable? Why fit 4 if not???

Bit puzzled.

Thanks very much
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a b V Motherboard
March 15, 2014 8:52:23 PM

Dave FromKent said:
Thanks for responding, but I didn't make myself clear.

1. The board has 6 x USB 3.0 slots on the back I/O
2. The WLAN unit in the front 5.25" drive bay adds another 4 USB 3.0
3. My Arc Midi R2 case adds another 2 x USB 3.0

Total of 12 and yeah I know, I'll never use them all!!

So the 6 USB 3.0 ports on the back I/O, are OK and will work, no probs.

The issue is about the 4 x USB 3.0 on the 5.25" front bay WLAN unit and the 2 USB 3.0 on the case.

As I said, the board has 2 x USB 3.0 headers
The Case has one USB 3.0 connector cable for 2 USB 3.0. Should be OK.
The WLAN bay unit has ONLY ONE USB 3.0 connector cable for 4 x USB 3.0. Can all 4 work off one cable? Why fit 4 if not???

Bit puzzled.

Thanks very much


They will work IMHO.
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April 1, 2014 5:57:04 AM

You were correct! 12 x working USB 3.0 ports & 2 x USB 2.0.

How many peripherals does a bloke need?!!
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