[SOLVED] USB WiFi adapter unplugs on USB 3.0 but not USB 2.0

[Axl Rose]

I just bought a Tech key usb 3.0 wifi adapter
I dl'ed the drivers from their website and it's working when plugged into a USB 2.0 slot
But whenever I try to use any of the USB 3.0 ports it works then disconnects every time

 

[kerberos_20]

hi, got a few questions:
- do you have notebook or PC?
- if its PC, USB 3.0 ports are from mainboard (from behind PC) or from PC case (front USB)?
- what is you mainboard if its PC?

in either case, go to device manager and try disable power options for your USB ports (uncheck it)

 

[Axl Rose]

I have a PC. I used the front and back USB 3.0 ports
My motherboard is the Gigabyte b75m d3h
-i unchecked all the boxes to all the usb ports

 

[gggplaya]

Some of these small adapters will have USB power interference from USB itself, especially with 2.4ghz wifi signals. Some routers let you turn off USB 3.0 ports for this reason.

Here's an excerpt from a technical article about this problem:
https://www.pcmag.com/opinions/wireless-witch-the-truth-about-usb-30-and-wi-fi-interference


USB 3.0 has a 5Gbps signaling rate. The USB 3.0 specification requires USB 3.0 data to be scrambled and it requires spread-spectrum. The noise from USB 3.0 data spectrum can be high (in the 2.4-2.5GHz range). This noise can radiate from the USB 3.0 connector on a device (such as a PC or Router), the USB 3.0 connector on the peripheral device or the USB 3.0 [port]. If the antenna of a wireless device operating in this band is placed close to any of the USB 3.0 radiation channels, it can pick up the broadband noise. The broadband noise emitted from a USB 3.0 device can affect the SNR (signal-to-noise ratio) and limit the sensitivity of any wireless receiver whose antenna is physically located close to the USB 3.0 device. This may result in a drop in throughput on the wireless link.

USB 2.0 is capable of over 300mbps. I'm really doubting you'll get 300mbps with 2.4ghz wifi anyways. So you should just stick with USB 2.0. I don't think it'll be the bottleneck for you.

 

[Axl Rose]

Some of these small adapters will have USB power interference from USB itself, especially with 2.4ghz wifi signals. Some routers let you turn off USB 3.0 ports for this reason.

Here's an excerpt from a technical article about this problem:
https://www.pcmag.com/opinions/wireless-witch-the-truth-about-usb-30-and-wi-fi-interference


USB 3.0 has a 5Gbps signaling rate. The USB 3.0 specification requires USB 3.0 data to be scrambled and it requires spread-spectrum. The noise from USB 3.0 data spectrum can be high (in the 2.4-2.5GHz range). This noise can radiate from the USB 3.0 connector on a device (such as a PC or Router), the USB 3.0 connector on the peripheral device or the USB 3.0 [port]. If the antenna of a wireless device operating in this band is placed close to any of the USB 3.0 radiation channels, it can pick up the broadband noise. The broadband noise emitted from a USB 3.0 device can affect the SNR (signal-to-noise ratio) and limit the sensitivity of any wireless receiver whose antenna is physically located close to the USB 3.0 device. This may result in a drop in throughput on the wireless link.

USB 2.0 is capable of over 300mbps. I'm really doubting you'll get 300mbps with 2.4ghz wifi anyways. So you should just stick with USB 2.0. I don't think it'll be the bottleneck for you.

Alright thanks man!
Are you saying that i'm prob not getting 300mbps bc the ISP speed isn't even capable of that speed?

 

[gggplaya]

Alright thanks man!
Are you saying that i'm prob not getting 300mbps bc the ISP speed isn't even capable of that speed?

No, I’m saying it because Wireless N at 2.4ghz will struggle to even get over 150mbps in real world speeds. You need wirelessAC with 5ghz to get over 300mbps realistically.