| Feature | Low Quality (Avoid) | High Quality (Buy) | | :--- | :--- | :--- | | | Blank or illegible logo | Clear FTDI, SiLabs, or Prolific logo | | Driver installation | Requires sketchy CD driver | Windows Update / Native PnP | | LED indicators | None or single power LED | Tx/Rx activity LEDs | | Screw terminator | Plastic, cheap feeling | Nickel-plated, threaded metal | | Weight | Suspiciously light (under 30g) | Substantial (50g+) due to internal shielding |
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