0a46:6688 — ZT6688 Fast Ethernet Adapter

This is the USB identifier for a ZT6688 Fast Ethernet Adapter manufactured by Davicom Semiconductor, Inc.. The vendor ID 0a46 is registered to Davicom Semiconductor, Inc. with the USB Implementers Forum, and 6688 is the product ID that Davicom Semiconductor, Inc. assigned to this particular model. When you run lsusb on Linux, this device appears as 0a46:6688 Davicom Semiconductor, Inc. ZT6688 Fast Ethernet Adapter.

Linux

$ lsusb
Bus 001 Device 004: ID 0a46:6688 Davicom Semiconductor, Inc. ZT6688 Fast Ethernet Adapter

You can filter directly with lsusb -d 0a46:6688, or get the full descriptor dump with lsusb -v -d 0a46:6688. Kernel messages from dmesg show the same pair as idVendor=0a46, idProduct=6688.

Windows

In Device Manager, open the device, go to Details → Hardware Ids. This device reports:

USB\VID_0A46&PID_6688
USB\VID_0A46&PID_6688&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_0A46&PID_6688"

macOS

$ system_profiler SPUSBDataType
    ZT6688 Fast Ethernet Adapter:
      Product ID: 0x6688
      Vendor ID: 0x0a46  (Davicom Semiconductor, Inc.)

Having driver issues with this device? Most USB devices are handled by a generic class driver; if yours shows up as an unknown device, confirm the ID above first, then check the manufacturer's downloads page.

The exact lines this page is generated from, in the upstream source file:

0a46  Davicom Semiconductor, Inc.
	6688  ZT6688 Fast Ethernet Adapter

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