Adapter okay. PSU torture

Adapter okay. PSU torture

TP-Link TL-WA890EA N600 Universal Dual Band Wireless Internet Adapter for Smart TV and Blu-ray (Ethernet to WLAN, 4x RJ-45 port) (Personal Computers)
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Customer Review

The adapter is perfectly okay. Works, the decor was simple and so far always worked the connection. Attached are a AVR, a Dreambox and a PS3. However, the power supply is an absolute disgrace. I had a few days a ringing in the ear, thought at first it was stress-related, and then found that this only occurs when I am staying for several hours in the living room. This was triggered by a very high frequency whistle of the power supply. I then ordered a new adapter and hoped that the power supply is better. But in the 2nd version was heard this, MMN already hazardous noise.

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