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Missing wireless connections (No wireless networks detected by the laptop and the wireless adapter is absent from Device Manager). Video card or graphics chipset failures (No video from either the LCD display or on the external monitor). [3] Sound system, optical drive and/or hard drive problems.
The jack redirects the audio to the speakers if no headphone connection is detected. Similarly, the return pins ground the microphone jack connection if no microphone detected. As a result, most motherboards with AC'97 audio require two jumpers to short these pins if no front panel audio module is connected, so audio passes to the speakers.
Computer speakers, or multimedia speakers, are speakers sold for use with computers, although usually capable of other audio uses, e.g. for an MP3 player. Most such speakers have an internal amplifier and consequently require a power source, which may be by a mains power supply often via an AC adapter , batteries, or a USB port.
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Wireless streaming of audio to headphones with or without communication capabilities. Wireless streaming of data collected by Bluetooth-enabled fitness devices to phone or PC. [42] Wireless networking between PCs in a confined space and where little bandwidth is required. [43] Wireless communication with PC input and output devices, the most ...
4-pin speaker connector (marked SPK) on motherboard Tiny moving-iron PC speaker uses 4-pin 2-wire connection. In some applications, the PC speaker is affixed directly to the computer's motherboard; in others, including the first IBM Personal Computer, the speaker is attached by wire to a connector on the motherboard. Some PC cases come with a ...
Wireless speakers are loudspeakers that receive audio signals using radio frequency (RF) waves rather than over audio cables. The two most popular RF frequencies that support audio transmission to wireless loudspeakers include a variation of WiFi IEEE 802.11 , while others depend on Bluetooth to transmit audio data to the receiving speaker.