1. The computer's headphones have no sound. Step 1: Check whether the sound card is in good contact with the motherboard slot. You can re-plug a sound card.
2. Computer Headphones No Sound Step 2: Look at the sound icon at the bottom right. Is the sound turned off or the volume has been minimized? Open on the line.
3 computer headphones no sound Step 3: Check the connection between the host and the speaker is not loose or disconnected, speaker power is not turned on, the speaker volume knob is not closed to the minimum.
4. The computer's headphones have no sound Step 4: Uninstall the sound card driver, reinstall or upgrade the sound card driver. Note If you do not hear any sound after checking, you are advised to reinstall your sound card or change your headset.
For more information, please pay attention to China Headphone Trading Network: ã€/】, welcome to use free trial membership, contact information
SFP (Small Form-factor Pluggable) can be simply understood as an upgraded version of GBIC. GBIC (abbreviation for Gigabit Interface Converter) is an interface device that converts gigabit electrical signals into optical signals. GBIC is designed to be hot-swappable. GBIC is an interchangeable product that meets international standards. Gigabit switches designed with GBIC interfaces have a large market share due to flexible interchangeability.
GBIC modules are divided into two categories: one is the GBIC module used by ordinary cascade to realize the ordinary connection with other switches; the other is the stack dedicated GBIC module to realize the redundant connection with other switches.
GBIC was basically replaced by SFP for the following reasons:
SFP (Small Form-factor Pluggables) can be simply understood as an upgraded version of GBIC.
SFP module (the volume is reduced by half compared to the GBIC module, and the number of ports can be more than doubled on the same panel.
Because the SFP module is basically the same as GBIC in function, it is also called Mini-GBIC (Mini-GBIC) by some switch manufacturers.
The SFP module further compresses the size and power consumption by putting CDR and electric dispersion compensation outside the module. Used in optical communication applications in telecommunications and data communications. SFP connects the motherboard and optical fiber or UTP cable of network equipment such as switches, routers and other equipment. SFP is an industrial specification supported by some fiber optic component providers.
SFP supports SONET, Gigabit Ethernet, Fiber Channel and some other communication standards. This standard is extended to SFP+, which can support 10.0 Gbit/s transmission rate, including 8 gigabit Fibre Channel and 10GbE. Introduced the optical fiber and copper core version of the SFP+ module version. Compared with the Xenpak, X2 or XFP version of the module, the SFP+ module keeps part of the circuit on the main board instead of the module.
Sfp Module,Epon Sfp,Gpon Sfp
Shenzhen GL-COM Technology CO.,LTD. , https://www.szglcom.com