Officially unsupported, but the H65B-LZ variant can work via modified FTDI drivers.
Most BULLDOZER boards utilize Realtek ALC series chips. Installing the specific driver ensures you get multi-channel sound and microphone input functionality. 4. Ethernet/LAN BULLDOZER H55B-H65B-LZ Driver Windos Vista-7-8-...
: They excel at maintaining compatibility with older operating systems like Windows 7 , where modern hardware often lacks driver support. Officially unsupported, but the H65B-LZ variant can work
The installation process for Windows 7 and 8 is similar to Windows Vista: Force the device into a USB 2
As of June 2025, these community-mirrored URLs are active:
| Error Code | Solution | |------------|----------| | (Device cannot start) | Conflict with USB 3.0 port. Force the device into a USB 2.0 port (often black plastic instead of blue). | | Code 39 (Driver corrupted) | Run sfc /scannow in CMD (Admin), then reinstall the driver using the Have Disk method, not Setup.exe. | | Constant BSOD (IRQL_NOT_LESS_OR_EQUAL) | You installed the wrong CH340 driver. Boot Safe Mode, delete C:\Windows\System32\drivers\ser2pl64.sys , then install the correct BULLDOZER INF. | | Device works on 32-bit but not 64-bit | The LZ variant requires a 64-bit signed driver patch. Download bdz_lz64_signed.zip from a verified industrial forum (e.g., PLCtalk.net). |