1d4d:0002 — Ralink RT2770/2720 802.11b/g/n Wireless LAN Mini-USB Device

This is the USB identifier for a Ralink RT2770/2720 802.11b/g/n Wireless LAN Mini-USB Device manufactured by PEGATRON CORPORATION. The vendor ID 1d4d is registered to PEGATRON CORPORATION with the USB Implementers Forum, and 0002 is the product ID that PEGATRON CORPORATION assigned to this particular model. When you run lsusb on Linux, this device appears as 1d4d:0002 PEGATRON CORPORATION Ralink RT2770/2720 802.11b/g/n Wireless LAN Mini-USB Device.

Linux

$ lsusb
Bus 001 Device 004: ID 1d4d:0002 PEGATRON CORPORATION Ralink RT2770/2720 802.11b/g/n Wireless LAN Mini-USB Device

You can filter directly with lsusb -d 1d4d:0002, or get the full descriptor dump with lsusb -v -d 1d4d:0002. Kernel messages from dmesg show the same pair as idVendor=1d4d, idProduct=0002.

Windows

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

USB\VID_1D4D&PID_0002
USB\VID_1D4D&PID_0002&REV_0100

From PowerShell: Get-PnpDevice | Where-Object InstanceId -match "VID_1D4D&PID_0002"

macOS

$ system_profiler SPUSBDataType
    Ralink RT2770/2720 802.11b/g/n Wireless LAN Mini-USB Device:
      Product ID: 0x0002
      Vendor ID: 0x1d4d  (PEGATRON CORPORATION)

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:

1d4d  PEGATRON CORPORATION
	0002  Ralink RT2770/2720 802.11b/g/n Wireless LAN Mini-USB Device

• 1d4d:000c Ralink RT3070 802.11b/g/n Wireless Lan USB Device
• 1d4d:000e Ralink RT3070 802.11b/g/n Wireless Lan USB Device

See all 3 devices from PEGATRON CORPORATION →