Qualcomm QCA9377 driver
Qualcomm lists the QCA9377 as a 1x1 802.11ac Wi-Fi and Bluetooth chip but does not offer a consumer Windows driver page that we could read. Get the driver from Windows Update and your laptop maker's support page, searching by model. Makers publish their own builds.
Checked October 30, 2026 against the manufacturer's own pages.
Hardware IDs on this page
| Hardware ID | Device name |
|---|---|
PCI\VEN_168C&DEV_0042 | QCA9377 802.11ac Wireless Network Adapter |
Match the first line of Hardware Ids in Device Manager (Properties, Details) against this list. Names come from the public PCI ID Repository.
The short version
What to install and where it comes from. Every link goes to the manufacturer or Microsoft, never to a copy.
Official files only, nothing bundled
Step by step
Check the name
Device Manager, Network adapters: Qualcomm Atheros QCA9377 Wireless Network Adapter. Hardware Ids: PCI\VEN_168C&DEV_0042.
Run Windows Update
Open Optional updates and install any Qualcomm wireless driver listed.
Open the laptop maker page
Search by model and look under Wireless LAN. The maker holds the build tested with your hardware.
Pair the Bluetooth
The chip includes Bluetooth. Install the maker's Qualcomm Atheros Bluetooth driver if it is missing.
Restart and test
Restart, reconnect and run a long download to see whether drops continue.
What the QCA9377 is
The QCA9377 is a combined Wi-Fi 5 and Bluetooth chip from Qualcomm Atheros. Qualcomm describes it as a 1x1 802.11ac device with a peak Wi-Fi speed of 433 Mbps and Bluetooth 5.0. It is a modest chip: one antenna stream, no 6 GHz and no Wi-Fi 6.
Three versions of one chip
Qualcomm’s datasheet lists the QCA9377 in three versions. The -3 uses SDIO, the -5 uses PCIe for Wi-Fi and USB for Bluetooth, and the -7 uses USB 2.0. A laptop card in an M.2 slot is the PCIe kind, which matches the PCI ID in the hardware list below.
Where to find a driver
Chip makers like Qualcomm sell to PC makers, and the product page speaks to them. Windows users should get the driver from Windows Update or the PC maker. If Wi-Fi vanishes after moving to Windows 11, check the maker for a newer file first, and roll back through Device Manager as the second step.
Questions
Does Qualcomm publish a driver for it?
The product page and datasheet cover the chip for device makers. We found no Windows installer for users.
Wi-Fi vanished on Windows 11.
Support threads report this on some laptops. Try Windows Update, then the maker's latest driver, then roll back.
What are the three versions?
Qualcomm's datasheet lists three: -3 with SDIO, -5 with PCIe for Wi-Fi and USB for Bluetooth, and -7 with USB.