As you’re shopping for USB hubs, you may notice that certain models are much more expensive. That’s usually because they include more than just USB ports. Sometimes called port replicators, these USB hubs typically use one port from your computer to host services for multiple other ports.
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Port replicators are ideal for use with laptops. Using just one of your laptop’s USB slots, these devices can add ports for many things.
Ethernet connectivity
Even though WiFi can be fast, a hardwired Ethernet network connection will be faster. If you want a USB hub that speeds up your computer’s ability to download or transfer files, make sure you buy a port replicator with a gigabit Ethernet port.
HDMI or DisplayPort passthrough
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If you want to connect your laptop to an external monitor, get a USB hub that includes at least one HDMI or DisplayPort interface.
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Audio
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If you’re ready to hear your laptop’s audio through a proper set of computer speakers, find a USB hub or port replicator that features a dedicated 3.5mm auxiliary headphone jack. This can be useful for listening to music from your workspace, especially if your phone doesn’t have a headphone jack.