It's unusual for a 4G WiFi dongle to work only with specific power sources. Generally, these devices should be compatible with most USB ports or power sources that provide the required voltage and current. However, there could be a few reasons why it seems to work only with certain power sources: Power Output Variations : Some USB ports or power sources might provide different power outputs. If the dongle is particularly sensitive to voltage or current variations, it might work inconsistently with certain sources that don't meet its power requirements. Quality of Power Source : Lower quality USB ports or power adapters might not provide stable power output, leading to inconsistent performance of the dongle. It could be more sensitive to fluctuations in lower-quality sources. Compatibility Issues : There could be compatibility issues between the dongle and specific power sources due to varying USB standards, port versions, or proprietary power specifications. To troubleshoot t...
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