Yes, you can connect a USB device to a MacBook.

First, MacBook models are equipped with USB-C or Thunderbolt ports, allowing you to connect charging cords for MacBook and other USB-C-enabled devices. Then, you can use a USB-C adapter or dongle to convert the MacBook's USB-C port to a traditional USB-A port, enabling compatibility with standard USB devices.

Several types of USB adapters are available for MacBooks:

USB-C to USB-A Adapter: This allows you to connect USB-A devices (such as older external hard drives, keyboards, and mice) to your MacBook's USB-C port.

USB-C to HDMI/DisplayPort/VGA Adapter: This enables you to connect your MacBook to external monitors or projectors with different display interfaces.

USB-C to Lightning Cable: This is useful when you want to charge and sync your iPhone and iPad with your MacBook.

USB-C to Ethernet adapters: This provides a stable wired option for networking with the Internet.

Yes, you can connect external devices to your MacBook using a USB adapter. There are various types of USB adapters available, such as USB-C to USB-A, USB-C to HDMI, USB-C to Ethernet, and more, allowing you to connect a wide range of displays, monitors, smartphones, and other peripherals to your MacBook for enhanced functionality and convenience.

Yes, a USB adapter can support video output to an external display. USB-C (or Thunderbolt) to HDMI or DisplayPort adapters allow you to connect an external monitor or projector, extending or mirroring your MacBook's display. For example, Anker 518 USB-C Adapter (8K HDMI) can turn your laptop's USB-C port into an HDMI port to connect with various TVs, monitors, and projectors for 4K or even 8K high-quality video output.