PCI\VEN_1B21&DEV_1242
ASM1142 USB 3.1 Host Controller driver
PCI\VEN_1B21&DEV_1242 is the ASMedia Technology Inc. ASM1142 USB 3.1 Host Controller, an USB controller device. Without the right controller driver, ports may stop working or devices may show as not recognized. Get it from Windows Update or your PC maker first; the chip maker's own package is on intel.com.
Device details
| Hardware ID | PCI\VEN_1B21&DEV_1242 |
|---|---|
| Device name | ASM1142 USB 3.1 Host Controller |
| Maker | ASMedia Technology Inc. (PCI vendor ID 1B21) |
| Device type | USB controller |
| Driver guide | Fix USB Controller driver |
| Known OEM variants | 1 |
PCs and boards that use this chip
Each line is a subsystem ID: the full hardware ID ends in SUBSYS_ plus these eight characters when the ASM1142 USB 3.1 Host Controller is built into that maker's product.
| Full hardware ID ending | Maker | Product |
|---|---|---|
SUBSYS_9A424C52 | LR-LINK | LRSU9A42 2-Port Type-A Exchange Adapter |
If your SUBSYS matches a laptop or board maker in this list, that maker's support page has the version tested for your model.
How to install the driver for ASM1142 USB 3.1 Host Controller
- Confirm the ID. In Device Manager, right-click the device, open Properties, then Details, and pick Hardware Ids. The first line should start with
PCI\VEN_1B21&DEV_1242. - Try Windows Update. Settings, Windows Update, Advanced options, Optional updates. Windows includes drivers for most USB controllers; updates may appear here.
- Check your PC maker. Enter your model or serial number on its support site and look under Chipset or USB.
- Use the chip maker's package. Intel Chipset INF Utility on intel.com. Our fix usb controller driver guide explains which package fits.
- Restart and check. Plug a USB device into each port and check that it is recognized.
Other ASMedia usb controller IDs
VEN_1B21&DEV_1040ASM1040 SuperSpeed USB Host ControllerVEN_1B21&DEV_1041ASM1041 SuperSpeed USB Host ControllerVEN_1B21&DEV_1042ASM1042 SuperSpeed USB Host ControllerVEN_1B21&DEV_1142ASM1042A USB 3.0 Host ControllerVEN_1B21&DEV_1343ASM1143 USB 3.1 Host ControllerVEN_1B21&DEV_2142ASM2142/ASM3142 USB 3.1 Host ControllerVEN_1B21&DEV_2426ASM4242 USB 3.2 xHCI ControllerVEN_1B21&DEV_3042ASM3042 USB 3.2 Gen 1 xHCI Controller
Device names: The PCI ID Repository, public data. We never host driver files: downloads come from the maker.