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Connector B                                                                 1 - USB 3.1 Front Panel Header

Color                                                                             Black

Product Weight                                                             0.2 oz [5.1 g]

Weight                                                                           0.2 oz [5.1 g]

USB 3.1 Front Panel Header to USB 3.0 20Pin Header Extension Cable

USB 3.1 Type E to USB3.0 20pin Extension Cable

USB 3.1 Front Panel Header to USB 3.0 20Pin Header Extension Cable 20cm for ASUS Motherboard

USB 3.1 require a different front panel header than USB 3.0.

The USB 3.1 port interface is using the USB 3.0 pin set and more. It is design to be backwards compatible (will explain later).

There are no official release of the specs for the USB 3.1 header yet (as of this writing),

But first motherboard with this is the ASUS ROG MAXIMUS IX FORMULA,STRIX Z270I/Z270G etc.

Length: 20cm

Connector1: USB 3.0 Front Panel Header

Connector2: USB 3.1 Front Panel Header 

Customer Feedback

1.Cable connects ASUS USB3.1 Gen2 header to two USB3.1 Gen1 devices - Is not for USB3.1 Gen 2 use Septem.

I had to try ASUS Z370 MOBO's internal USB31G2_E3 internal connector - bottom line: not worth the effort, unless want more USB3.1 Gen 1 ports. The cable connects securely to the MOBO U31G2 header and connects to two USB3.1 Gen 1 devices. Cable does not take advantage of ASUS Gen 2 pins for CC1/CC2 and SB1/SU2.so really does not support USB 3.1 Gen 2. The cable is less than 12 inch in length, so just reaches front panel device. The cable was connected to a USB splitter cable and recognized two attached USB 3.1 thumb drives. Configured the BIOS for ASMedia front panel USB 3.1 Gen 2 (Enabled) and selected USB3.1 front panel instead of PCIeX1. Crystal Disk Mark speed test using the USB 3.1 Gen2 header and this cable gave same results for a USB 3.1 Gen 1 device, as expected. So if expecting USB3.1 Gen 2 performance from this cable - forget it! Cable does not take full advantage of the ASUS U31G2 connector, waiting for Gen 2 devices before trying a different cable.

2.Allowed me to connect my GEN2 (USB C) case port to my miotherboard's GEN1 USB 3.1.

Check what product I'm talking about above ^. This is to fit a case USB-C cable (3.1 GEN2) to a motherboard with only regular 3.1 connectors (GEN1).

My MSI Z370 has 2 GEN1 USB 3.1 connectors (on the board), but no GEN2 connectors (they're smaller and look a bit like a SATA connector mixed with an old school Firewire). I have a new NZXT 510i case that has a USB C port on it. However, you need a GEN2 connector on your motherboard for it to work. This product solves that issue as it used the 2 channels of the USB 3.1 port (5G each) and mixes them up to create a 10G lane, and it works perfectly. I tried to measure the speed but honestly it goes so fast I can't find a big enough file to check... It transferred a gigabit file to my Pixel 2 phone in what seemed to be about 6-10 seconds.

Now, the only thing to check is that you have a free USB 3.1 port on your motherboard, and that since the adapter is at a right angle, that it will physically fit. I have 2, and the first one would have not fit with the RAM (see top port on picture), to use the second one, I had to move my GPU to a lower port (see picture, if I used the top PCIe port it would have been covering the port which would still allow to fit a flat case 3.1 connector, but not this angled adapter).

3.Works With USB 3 Type C Header.

Cable did what I had hoped it would do. It allowed me to use the previously useless USB 3.0 Type C header on my z390 Dark Mother Board. I tried using a USB 3.0 Type C to USB 3.0 header converter cable, but it didn't work. So what I did was use this cable to plug into my Type C header and then I also purchased a USB 3.0 Type C to USB 3.0 Hub, which gave me 4 additional USB 3.0 ports. So, I'm very happy with this product. The cable is pretty long, although it was just a bit too short for what I wanted to do. No big deal, I found a work around.
You can see in the pic I attached this cabled plugged into my USB Type C header on my mother board in the upper left corner.

4.It worked with a new motherboard.

My Supermicro desktop motherboard included a type C header for USB 3.1 type 1. This extension cable allowed me to add an additional USB type C port to the back of my PC. It worked correctly when I connected it with an HDD dock. The expansion slot bracket wasn't a perfect fit for my case but stayed put securely enough to be used.