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The way a device uses Bluetooth depends on its profile capabilities. The profiles provide standards that manufacturers follow to allow devices to use Bluetooth in the intended manner. For the Bluetooth Low Energy stack, according to Bluetooth 4.0 a special set of profiles applies.
They each extend the Surface with a number of USB ports, additional audio sockets, a Gigabit Ethernet port and a selection of ports to connect external displays. As of April 2023, while the only two discontinued Docks are for Surface Pro 1-3 and Surface 3, the latest model is the Surface Thunderbolt 4 Dock.
For example, when connecting a mobile phone to a Bluetooth headset, SDP will be used to determine which Bluetooth profiles are supported by the headset ( headset profile, hands free profile, advanced audio distribution profile, etc.) and the protocol multiplexer settings needed to connect to each of them.
This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for duplex, bidirectional traffic. They usually use port numbers that match the services of the corresponding TCP or UDP implementation, if they exist.
The Surface Laptop 2 includes three different ports on the left hand side of the laptop, a USB-A port, a mini-display port, and the headphone jack. The right side of the device contains a magnetic surface connector port.
Some headphone amplifiers have used it to connect balanced ... micro-USB headphones and supported Bluetooth ... with pin assignments for two ports with jack detection ...
It has largely replaced interfaces such as serial ports and parallel ports and has become commonplace on a wide range of devices. Examples of peripherals that are connected via USB include computer keyboards and mice, video cameras, printers, portable media players, mobile (portable) digital telephones, disk drives, and network adapters.
External ports included: RJ45, one 3.5in for headphones with microphone, 2 USB ports, 1 eSATA/USB port, HDMI, VGA, SecureCard, ExpressCard, and SD Card readers. A fingerprint reader was available on the palmrest. No CD/DVD slot is available, however a docking base was available for expanded USB ports and included the CD/DVD drive.
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