Problem | Symptoms

Some small form factor compute devices encounter performance limitations when handling multiple high-bandwidth USB connections simultaneously. This issue primarily arises due to the device's inability to maintain full USB 3.0 speeds across all connected peripherals. These limitations may lead to reduced functionality or disruptions in certain unified communication (UC) setups.

Symptoms

Users may notice the following when using affected devices in UC environments:

• HDMI Ingest failure when using USB Bridging (USB camera + USB audio)
• Audio dropouts during calls or meetings.
• Delayed or disrupted video streams from cameras.
• Peripheral devices failing to respond or disconnecting unexpectedly.

Causes | Verification

The root cause of this issue appears to stem from the hardware architecture of certain compute devices, specifically small form factor models. When multiple peripherals—such as cameras, audio devices, or other high-bandwidth USB 3.0 devices—are connected simultaneously, the compute device struggles to allocate sufficient bandwidth. This can result in intermittent failures or degraded performance across connected devices.

Solution | Workaround

To help minimize USB 3.0 peripherals overwhelming the USB hub of a compute device, it is recommended to use USB-A and/or USB-C ports located on different sides of the compute device as this may assist in offloading data between separate USB hubs on the compute device

Try to minimize the number of USB 3.0 peripherals connected to the compute device simultaneously.

Keep an eye on the performance of the compute device when multiple peripherals are connected and disconnect any non-essential devices if issues arise.