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You have exceeded the number of supported USB devices
dobbin231
Posts: 466 Forum Member
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Hi
I've just got a new PC and I am building a Boeing 737 Cockpit.
The spec of the PC is
Operating System - Windows 7 Home Premium 64-bit SP1
CPU - Intel Core i7 4790K @ 4.00GHz Haswell 22nm Technology
RAM - 16.0GB Dual-Channel DDR3 @ 1199MHz (11-13-14-32)
Motherboard - Gigabyte Technology Co., Ltd. Z97X-Gaming 5 (SOCKET 0)
Graphics - 4095MB NVIDIA GeForce GTX 970 (ASUStek Computer Inc)
Storage - 232GB Samsung SSD 850 EVO 250G SCSI Disk Device (SSD)
2794GB Western Digital WDC WD30EZRX-00DC0B0 SCSI Disk Device (SATA)
223GB Crucial_ CT240M500SSD1 SCSI Disk Device (SSD)
Optical Drives - PIONEER BD-RW BDR-S09 SCSI CdRom Device
Audio - Realtek High Definition Audio
I am using software called Prosim737 to simulate the various devices.
There are a lot of USB devices connected.
They are all USB 2 devices so I am not connecting anything to the USB 3 ports on my PC. However the error message I got refers to USB 3.0 eXtensible Host Controller (see below)
On start-up I noticed some of my devices were missing in Prosim737.
I then got the following message
The Full onscreen message is here
I did some investigation but I lack any experience with this.
There were some errors in device manager. Here is a couple of screenshots of my settings.
And here is what it said when I did 'properties' on an error device
I also downloaded and ran a Microsoft Tool called USBVIEW.
Here is the output from that
Unfortunately with my limited knowledge I cannot see anything useful in these.
Anyone with a better knowledge able to see any problem(s)?
How can I solve this?
P.S. - Sorry about just providing links to the images. I couldn't see any 'ADD IMAGE' option in this forum.
I've just got a new PC and I am building a Boeing 737 Cockpit.
The spec of the PC is
Operating System - Windows 7 Home Premium 64-bit SP1
CPU - Intel Core i7 4790K @ 4.00GHz Haswell 22nm Technology
RAM - 16.0GB Dual-Channel DDR3 @ 1199MHz (11-13-14-32)
Motherboard - Gigabyte Technology Co., Ltd. Z97X-Gaming 5 (SOCKET 0)
Graphics - 4095MB NVIDIA GeForce GTX 970 (ASUStek Computer Inc)
Storage - 232GB Samsung SSD 850 EVO 250G SCSI Disk Device (SSD)
2794GB Western Digital WDC WD30EZRX-00DC0B0 SCSI Disk Device (SATA)
223GB Crucial_ CT240M500SSD1 SCSI Disk Device (SSD)
Optical Drives - PIONEER BD-RW BDR-S09 SCSI CdRom Device
Audio - Realtek High Definition Audio
I am using software called Prosim737 to simulate the various devices.
There are a lot of USB devices connected.
They are all USB 2 devices so I am not connecting anything to the USB 3 ports on my PC. However the error message I got refers to USB 3.0 eXtensible Host Controller (see below)
On start-up I noticed some of my devices were missing in Prosim737.
I then got the following message
'You have exceeded the number of supported USB devices on the Intel USB 3.0 eXtensible Host Controller.
Please disconnect alternate USB device currently not being used or connect one of the devices to a different port'
The Full onscreen message is here
I did some investigation but I lack any experience with this.
There were some errors in device manager. Here is a couple of screenshots of my settings.
And here is what it said when I did 'properties' on an error device
I also downloaded and ran a Microsoft Tool called USBVIEW.
Here is the output from that
Unfortunately with my limited knowledge I cannot see anything useful in these.
Anyone with a better knowledge able to see any problem(s)?
How can I solve this?
P.S. - Sorry about just providing links to the images. I couldn't see any 'ADD IMAGE' option in this forum.
0
Comments
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I thought I'd have a Google for interest. https://www.google.co.uk/search?pws=0&gl=uk&q=number+of+supported+USB+devices+&gws_rd=ssl
The Intel Communities thread may help although it seems to be about the xhci controller mainly.
I don't know why you get an error when you don't use it.
But the conclusion to that thread seems to be 'get an extra Host Controller'.
Presumably that would be easy enough for a PC?
Sorry I can't help more. Keep us updated.
There are limitations to the DC power supplied by each USB hub, you may have a number of USB sockets on the one hub.
The MOBO chipset is probably 2 hubs, though some MOBOs may have additional USB hubs. That you will have to look up, also which USB sockets are connected to which USB hubs.
Also you will need to look up power requirements for each of your USB devices.
You maybe able to juggle your USB devices around so that you do not exceed the ratings of one hub.
You can buy a PCI-E expansion card which will provide more USB 2/3 Hubs.
Here are the USB devices I am using
They are all USB2. As you can see 4 of the devices are powered USB Hubs. I had exactly the same devices running on my previous PC which was an i7 with a Gigabyte Motherboard
So surely there should be no problem running the same devices with a newer motherboard/PC?
USB, iffy connection, that becomes loose pretty quick, low power, was slow until USB 3 cam out.
I have a firewire and while now it is behind USB, in it's day it would fly past USB and did not take up resources.
I remember the days of slower machines resources being taken up when copying an large file on USB.
Hopefully USB3.1 will be better.
You have to do some work looking up the spec of your MOBO and the Intel Z97 Express Chipset. The number of USB hubs(host controllers) provided.
What USB sockets on your box are connected to what USB Hub. You could have any number of USB sockets connected to one Hub thus sharing the power supplied to each USB socket.
The power requirements of all your USB devices needs looking up or some sort of estimate at least.
You can look at device labels for power requirements e.g. a Mouse maybe 100mA. A keyboard could also be around that or a lot more if it has a load of backlighting and LEDs.
With that lot connected to one USB Hub, and 4 additional powered USB hubs then I would expect you to have problems. You would likely need to distribute them between the 'Two' MOBO hubs, that two is an assumption the Intel and Gigabyte info is a bit dense.
USB specifications:
http://en.wikipedia.org/wiki/USB
If you have spare PCI/PCI-E slots on your motherboard you could also look at adding some extra ports that way.
Aside from that I am extremely disappointed that none of you nerds have asked to see photos of this contraption.
Some of these cheap hubs are not that good to be honest.l
Also in Device Manager with the USB Controllers Root Hubs Power Management, whether it would make a difference if the "Allow the computer to turn off this device to save power" box was unchecked?
Seen one 737 cockpit, seen em all
A copy of his Medical History needs to be emailed to the Mods though.
USB 3 sockets are backwards compatible with USB 2 devices. Why not use all USB sockets to spread the load ?
Maybe someone who understands the technical side of the USB interface and USBview can explain the screenshots. And maybe see where I am having a problem?
Here is a detailed explanation of the way my USB system & devices are setup.
I have 6 USB 2.0 cables going into the Computer.
================================================
No - Device
== ===========================================
01 - Trust 10 port powered USB 2.0 HUB (Overhead)
- Leo Bodnar BU0836X
- Leo Bodnar Button Box
- Leo Bodnar Button Box
- Leo Bodnar Button Box
- Phidgets LED 64
- Phidgets LED 64
- FDS Electric & Pressure OH panels
02 - Trust 10 port powered USB 2.0 HUB (MIP)
- Saitek Pro Flight Combat Rudder Pedals
- Leo Bodnar BU0836 (TQ)
- Leo Bodnar Button Box (F/O EFIS)
- Pokeys 65U IO card
- Plasma-MM2 (Captain Yoke)
- Leo Bodnar BU0836 (F/O Yoke)
03 - Trust 10 port powered USB 2.0 HUB (GoFlight Comms)
- GoFlight GFP8
- GoFlight GF-46
- GoFlight GF-166
- GoFlight GF-166
- GoFlight GF-166
- GoFlight GF-166
04 - FDS I/O Card on JetMax
05 - FDS JetMax MCP & EFIS
06 - Trust 10 port powered USB 2.0 HUB (Fire Panel
- Leo Bodnar BU0836X
- Phidgets LED 64
Cables 1,2,3 and 6 are from a Trust 10 port powered USB 2.0 HUB
For the HUBs I've used see this URL (http://www.trust.com/en/all-products/16131-10-port-usb-20-desktop-hub)
Hub on cable 01 has 7 x USB 2.0 devices attached (see 01 above for device details)
Hub on cable 02 has 6 x USB 2.0 devices attached (see 02 above for device details)
Hub on cable 03 has 6 x USB 2.0 devices attached (see 03 above for device details)
Hub on cable 06 has 2 x USB 2.0 devices attached (see 06 above for device details)
I then used microsoft's USBView.exe to examine the USB devices on the motherboard/PC with various configurations.
I took screenshots of the results. See the filename for a description of what is connected to the motherboard/PC in the screenshot.
Please see screenshots attached (UPLOADED) for your use.
USBView00 - No USB Devices connected to any port.jpg
USBView01 - HUB 1 in USB3 port on rear.jpg
USBView02 - HUB 2 in USB3 port on rear.jpg
USBView04 - HUB 3 in USB3 port on rear.jpg
USBView05 - HUB 4 in USB3 port on rear.jpg
USBView06 - HUB 5 in USB3 port on rear.jpg
USBView07 - HUB 6 in USB3 port on rear.jpg
USBView08 - HUB 1 in USB2 port on rear.jpg
USBView09 - HUB 6 in USB2 port on rear.jpg
USBView10 - HUB 5 in FRONT LEFT usb3 port.jpg
USBView11 - HUB 5 in FRONT RIGHT usb3 port.jpg
Using all of this information can you tell me the best way to connect these devices so that all devices are working and I do not get the error message?
I've just noticed a couple of things.....
USBView08 - HUB 1 in USB2 port on rear.jpg
USBView09 - HUB 6 in USB2 port on rear.jpg
- Although these are connected through the USB2 port on the back of the PC they are showing up on USB3 in USBview
USBView10 - HUB 5 in FRONT LEFT usb3 port.jpg
USBView11 - HUB 5 in FRONT RIGHT usb3 port.jpg
- These 2 screenshots are the same as USBView00 - No USB Devices connected to any port.jpg . Does that mean these 2 ports are not working?
http://en.m.wikipedia.org/wiki/Extensible_Host_Controller_Interface
Although USB theoretically allows 127 devices per controller, the article points out that most people don't use anywhere near that amount.
I can only suggest that you be methodical, and gradually add USB devices until you get the error. The article mentions low-speed and full-speed devices, so you might want to work out which devices are which.