Generally, the IO voltage of a conventional COM communication device fix at 3.3V, but the COM port voltage of various types of hard disks may be different. If the IO voltage of the COM communication device and the COM port of the hard drive are inconsistent, the communication may fail, and the hard disk command cannot be output, or the garbled production may occur.
Smart COM port adapter card advantage
1. More stable, using the high-fidelity audio cable to transmit data;
2. Faster, supporting transmission rates up to 12Mbps, four times that of traditional COM ports;
3. More compatible, support four different voltages, automatic matching
Compared with the traditional COM port communication adapter card, the DFL smart adapter card is easy to adjust automatically.