You didn't happen to mention which version of the OS you were running.
This would be helpful to know.
Varies versions including 10.3.8
Is the 2.0 Hub in question a single TT or multi TT hub?
According to Belkin, their F5U231 Tetra Hub guarantees 12Mbps bandwidth
to each port for USB 1.1 devices
Are there any other FS/LS devices connected to this hub?
Nothing else connected.
How many total interrupt endpoints are there in your device?
Here's the USB Prober data
Full Speed device @ 3 (0x4B330000):
............................................. Vendor-specific device:
"USB Camera Device"
Device Descriptor
Descriptor Version Number: 0x0110
Device Class: 255 (Vendor-specific)
Device Subclass: 0 (Vendor-specific)
Device Protocol: 0
Device MaxPacketSize: 8
Device VendorID/ProductID: 0x0553/0x0151 (VLSI Vision Ltd.)
Device Version Number: 0x0000
Number of Configurations: 1
Manufacturer String: 1 "VLSI Vision Ltd"
Product String: 2 "USB Camera Device"
Serial Number String: 0 (none)
Configuration Descriptor
Total Length of Descriptor: 179
Number of Interfaces: 1
Configuration Value: 1
Attributes: 0xA0 (bus-powered, remote wakeup)
MaxPower: 98 ma
Interface #0 - Vendor-specific
Alternate Setting 0
Number of Endpoints 0
Interface Class: 255 (Vendor-specific)
Interface Subclass; 0 (Vendor-specific)
Interface Protocol 0
Interface #0 - Vendor-specific (#1)
Alternate Setting 1
Number of Endpoints 2
Interface Class: 255 (Vendor-specific)
Interface Subclass; 0 (Vendor-specific)
Interface Protocol 0
Endpoint 0x82 - Bulk Input
Attributes: 0x82 (IN)
Attributes: 0x02 (Bulk)
Max Packet Size: 64
Polling Interval: 0 ms
Endpoint 0x83 - Interrupt Input
Attributes: 0x83 (IN)
Attributes: 0x03 (Interrupt)
Max Packet Size: 8
Polling Interval: 8 ms
Interface #0 - Vendor-specific (#2)
Alternate Setting 2
Number of Endpoints 2
Interface Class: 255 (Vendor-specific)
Interface Subclass; 0 (Vendor-specific)
Interface Protocol 0
Endpoint 0x81 - Isochronous Input
Attributes: 0x81 (IN)
Attributes: 0x01 (Isochronous)
Max Packet Size: 128
Polling Interval: 1 ms
Endpoint 0x83 - Interrupt Input
Attributes: 0x83 (IN)
Attributes: 0x03 (Interrupt)
Max Packet Size: 8
Polling Interval: 8 ms
Interface #0 - Vendor-specific (#3)
Alternate Setting 3
Number of Endpoints 2
Interface Class: 255 (Vendor-specific)
Interface Subclass; 0 (Vendor-specific)
Interface Protocol 0
Endpoint 0x81 - Isochronous Input
Attributes: 0x81 (IN)
Attributes: 0x01 (Isochronous)
Max Packet Size: 384
Polling Interval: 1 ms
Endpoint 0x83 - Interrupt Input
Attributes: 0x83 (IN)
Attributes: 0x03 (Interrupt)
Max Packet Size: 8
Polling Interval: 8 ms
Interface #0 - Vendor-specific (#4)
Alternate Setting 4
Number of Endpoints 2
Interface Class: 255 (Vendor-specific)
Interface Subclass; 0 (Vendor-specific)
Interface Protocol 0
Endpoint 0x81 - Isochronous Input
Attributes: 0x81 (IN)
Attributes: 0x01 (Isochronous)
Max Packet Size: 640
Polling Interval: 1 ms
Endpoint 0x83 - Interrupt Input
Attributes: 0x83 (IN)
Attributes: 0x03 (Interrupt)
Max Packet Size: 8
Polling Interval: 8 ms
Interface #0 - Vendor-specific (#5)
Alternate Setting 5
Number of Endpoints 2
Interface Class: 255 (Vendor-specific)
Interface Subclass; 0 (Vendor-specific)
Interface Protocol 0
Endpoint 0x81 - Isochronous Input
Attributes: 0x81 (IN)
Attributes: 0x01 (Isochronous)
Max Packet Size: 768
Polling Interval: 1 ms
Endpoint 0x83 - Interrupt Input
Attributes: 0x83 (IN)
Attributes: 0x03 (Interrupt)
Max Packet Size: 8
Polling Interval: 8 ms
Interface #0 - Vendor-specific (#6)
Alternate Setting 6
Number of Endpoints 2
Interface Class: 255 (Vendor-specific)
Interface Subclass; 0 (Vendor-specific)
Interface Protocol 0
Endpoint 0x81 - Isochronous Input
Attributes: 0x81 (IN)
Attributes: 0x01 (Isochronous)
Max Packet Size: 896
Polling Interval: 1 ms
Endpoint 0x83 - Interrupt Input
Attributes: 0x83 (IN)
Attributes: 0x03 (Interrupt)
Max Packet Size: 8
Polling Interval: 8 ms
Interface #0 - Vendor-specific (#7)
Alternate Setting 7
Number of Endpoints 2
Interface Class: 255 (Vendor-specific)
Interface Subclass; 0 (Vendor-specific)
Interface Protocol 0
Endpoint 0x81 - Isochronous Input
Attributes: 0x81 (IN)
Attributes: 0x01 (Isochronous)
Max Packet Size: 1023
Polling Interval: 1 ms
Endpoint 0x83 - Interrupt Input
Attributes: 0x83 (IN)
Attributes: 0x03 (Interrupt)
Max Packet Size: 8
Polling Interval: 8 ms
Thanks again,
Eric
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