3 Accessories and Peripheral Devices
Learn how to choose compatible laptop accessories, connect and configure them, and troubleshoot common problems safely.
Choose accessories by supported features
Laptop accessories extend the computer’s functions, but choosing one requires more than matching connector shapes. Check the laptop’s ports, supported data and display features, operating-system , and power requirements before buying or connecting a device.
can add connections for displays, USB devices, networking, and charging. A hub usually provides basic port expansion; a dock may also support displays, wired Ethernet, and power delivery. Check the dock’s supported laptop interface, the number and resolution of displays it supports, and its charging capacity.
A USB-C connector does not by itself guarantee support for video, fast data, or . Capabilities vary by device, cable, and port, so verify that each part of the setup supports the function you need.
Chargers and personal devices
Choose a charger that meets the laptop maker’s voltage and power requirements, and use a compatible cable. With , compatible equipment negotiates power, and the device draws what it needs; the charger’s maximum rating is not automatically forced into the laptop. A lower-capacity charger may charge slowly or fail to keep up during heavy use.
Keyboards, mice, and headsets may connect through USB, a wireless USB receiver, Bluetooth, or an audio jack. Check the required connection type, receiver or adapter, battery needs, and any special software or controls.
includes USB flash drives, portable hard drives, and solid-state drives. Compare capacity, transfer interface, and with every device that will share the drive. Formatting can erase the drive’s contents, so back up needed data first.
Connect and configure devices
Inspect ports and cables. Match the accessory’s connector to a port that supports the required function. Use the accessory’s cable when possible; a cable that fits may still lack the required data speed, video capability, or power rating.
Connect power and the dock. If the dock has its own power supply, connect it as directed by its manufacturer. Connect the dock to the laptop using the specified upstream port and cable, then attach displays and other peripherals. Allow the operating system time to recognize devices. Install drivers or firmware only from the laptop or accessory manufacturer when needed.
Configure displays. In Windows, open Settings > System > Display to identify and arrange displays, choose resolution, and select whether to duplicate or extend the desktop. If a display is not detected, check the cable, dock , and selected display mode. The laptop’s graphics hardware and dock can limit the number of displays that work and their resolution.
Pair wireless devices. Turn on Bluetooth, put the accessory into pairing mode, and add it from the computer’s Bluetooth settings. In Windows, use Settings > Bluetooth & devices. After pairing a headset, select it as the sound output and, if needed, the microphone input in sound settings.
Test input and storage. Check the keyboard layout and special keys, mouse behavior, headset microphone, and speaker output. A newly connected drive should appear in the operating system’s file manager. Do not initialize or format a drive that contains needed files. Use the operating system’s safe-removal function before unplugging removable storage to reduce the risk of data loss.
Troubleshoot connection problems
When an accessory fails, simplify the setup: disconnect extra devices and reconnect the accessory directly to the laptop. Try a known-good compatible cable or port, and check the accessory’s power or battery.
For a dock, confirm that the laptop port supports the dock’s required functions. For a Bluetooth device, check that it is charged and in pairing mode, and verify that the correct audio or input device is selected. If the device is still not recognized, restarting the laptop or installing a manufacturer-provided driver may help.