Jqbt Bluetooth Driver -

| Metric | Value | |--------------------------------|--------------| | HCI command round-trip | ~3.2 ms | | Max ACL throughput (2 Mbps) | 1.1 Mbps | | Event dispatch latency (P99) | 210 µs | | RAM usage (core + UART buffer) | 47 KB | | Code size (ARM Thumb) | 28 KB |

1. The device shows up as "Unknown Device" and won't install. jqbt bluetooth driver

2. Bluetooth is turned off / Icon missing. 3. "Error 43" in Device Manager.

3. "Error 43" in Device Manager.

4. Can connect audio but sound quality is bad. jqbt bluetooth driver

| Transport | Max baudrate | Flow control | DMA support | |-----------|--------------|--------------|-------------| | UART H4 | 4 Mbps | RTS/CTS | Yes | | USB (bulk) | 12 Mbps | N/A (USB) | Yes | | SDIO | 100 Mbps | N/A | Yes | | Virtual | N/A | N/A | N/A (test) |