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Forum Discussion
art305
Jan 29, 2022Aspirant
The NV+ has 3 x 2.0 usb ports yet the pci_devices.log states 2 of the ports are 1.1
Hi
As I stated in subject the pci_devices.log reports 2 of the usb ports as 1.1(see below) but NV+ is supposed to have 3 x 2.0 usb ports 1 front 2 rear.
So if that is the case that 2 of the usb ports are 1.1 which of the ports is 2.0, front or back?
Thanks
Art
pci_devices.log
0000:00:17.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
Flags: bus master, medium devsel, latency 128, IRQ 27
I/O ports at 5c001000 [size=32]
Capabilities: [80] Power Management version 2
0000:00:17.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 61) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
Flags: bus master, medium devsel, latency 128, IRQ 27
I/O ports at 5c001020 [size=32]
Capabilities: [80] Power Management version 2
0000:00:17.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 63) (prog-if 20 [EHCI])
Subsystem: VIA Technologies, Inc. USB 2.0
Flags: bus master, medium devsel, latency 128, IRQ 27
Memory at 000000005c010000 (32-bit, non-prefetchable) [size=256]
Capabilities: [80] Power Management version 2
2 Replies
- StephenBGuru - Experienced User
Per the hardware manual ( https://www.downloads.netgear.com/files/GDC/RND2110/Duov1_NV+v1_HW_en_06Dec11.pdf ) all three of the USB ports are 2.0.
Not certain about this, but I believe that USB 1/1.1 devices end up using one of the UHCI controllers (even though they are plugged into a USB 2 port).
- art305Aspirant
Yes I see what you mean 1.1 UHCI controllers are for compatibility.
I will do some more investigating. The logs also give a history of which usb port has what device connect and is using which controller so I will try using each port and see what the logs say.
Art
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