Cable modem
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So far, various research institutes have conducted extensive research on cable modems. These research results have finally formed several internationally defined standards, IEEE defined IEEE802.14 protocol, DAVIC defined DAVIC protocol and MCNS defined DOCSIS. And the EuroDOCSIS agreement. It is reported that for the CA system, China has already decided to adopt the same-secret technology, and hopes that cable TV can apply CA system with independent intellectual property rights as soon as possible. For the development of China's cable modem (CM) standards, it tends to EuroDOCSIS, on the basis of which to add our own things. The EuroDOCSOS standard has a downlink symbol rate of 6.9652 Mb/s and an upstream frequency range of 5-65 MHz.
85W Macbook Charger
The 85W Macbook Charger MagSafe 1 or MagSafe 2 Power Adapter features a magnetic DC connector so if someone should trip over it, the cord disconnects harmlessly and your MacBook Pro stays put safely. It also helps prevent fraying or weakening of the cables over time. In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection.
When the connection is secure, an LED located at the head of the DC connector lights up; an amber light lets you know that your notebook is charging, while a green light tells you that you have a full charge. An AC cord is provided with the adapter for maximum cord length, while the AC wall adapter (also provided) gives you an even easier and more compact way to travel.
Designed to be the perfect traveling companion, the adapter has a clever design which allows the DC cable to be wound neatly around itself for easy cable storage.
This power adapter recharges the lithium polymer battery while the system is off, on, or in sleep mode. It also powers the system if you choose to operate without a battery.
Compatible with MacBook Pro with Retina display.
Not sure if this is the right power adapter for your Mac?
See this article for more details about choosing the right one.
Knowing which specific Mac model you have is important.
Please contact with me, that I can tell you about your Mac model and generation will be displayed.
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Shenzhen Waweis Technology Co., Ltd. , https://www.huaweishiadapter.com