USB\VID_1A81 or USB Vendor ID 1A81 recognizes Holtek Semiconductor, Inc. as the USB Vendor and manufacturer of devices listed below.
| Vendor Id | Vendor Name | Device Id | Device Name | Type |
|---|---|---|---|---|
| 1A81 | Holtek Semiconductor, Inc. | 1004 | Wireless Dongle 2.4 GHZ HT82D40REW | USB |
| 1A81 | Holtek Semiconductor, Inc. | 1701 | Wireless dongle | USB |
| 1A81 | Holtek Semiconductor, Inc. | 2004 | Keyboard | USB |
| 1A81 | Holtek Semiconductor, Inc. | 2203 | Laser Gaming mouse | USB |
| 1A81 | Holtek Semiconductor, Inc. | 2204 | Optical Mouse | USB |
| 1A81 | Holtek Semiconductor, Inc. | 2205 | Laser Mouse | USB |
| 1A81 | Holtek Semiconductor, Inc. | 4001 | Keyboard | USB |