Apple rarely has sales, but you can save $20 on this MacBook accessory by buying it as an Amazon warehouse deal

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Jeff Dunn/Business InsiderIf you recently bought a MacBook or MacBook Pro, you’re having to deal with the transition to USB-C.

It’s a versatile connector that will (hopefully) lead to a lot less confusion in the future, but for now it can be an inconvenience.

There are several dongles and docks available to help ease the transition, but if you’d rather stick with Apple’s instead of opting for third-party dongle, you’re in luck.

Right now, you can save $20 on Apple’s official AV Multiport Adapter by buying it as an Amazon Warehouse deal.

This dongle includes one HDMI port and one standard USB port, and a USB-C pass-through port so you can charge your laptop while using the other two. On the one-port regular MacBook that last part is important.

There’s little to say about the regular USB port; use it to connect older accessories and peripherals to your computer. The HDMI port is a little more interesting. While it can output video at 4K, it tops out at 30hz, making it a no-go for anyone hoping to use their laptop with a high-resolution display for professional work. It can output a 1080P video signal at 60hz, though, which may be useful to you depending on your setup.

As the name suggests, this "AV" adapter is meant more for connecting your laptop to a projector for presentations or TV for movies.

Like I said earlier, there are a bunch of options for those looking to make the most out of their new laptop, but Apple’s dongle guarantees total compatibility. On the off chance that a third-party option doesn’t work completely, or somehow becomes incompatible, the last place you want to realize this is on a plane, or en route to deliver a presentation.

This dongle may be pretty basic, but it covers the two things people do most often: connect their computer to a TV or monitor, and plug in accessories. If you do either on a regular basis, it’s worth picking this one up, at least at this discounted price.