Yes, the length of the USB serial cable has an impact on transmission performance. Longer cables may cause signal attenuation and delay, especially when transmitting at high baud rates. If a longer transmission distance is required, it is recommended to use a signal booster or a differential signal standard such as RS485, which is more robust for long-distance transmission. Most USB serial cables are limited to a length of 3 to 5 meters, but the design of different manufacturers may vary. If you need to exceed this distance, you may need to use a USB extender or other solutions.

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