Get a portable second monitor for your laptop for $250

TL;DR: As of August 4, you can get the Mobile Pixels DUEX Plus: Portable Dual-Screen Laptop Monitor for just $249.97 instead of $339 — that's a savings of 26%.

Your dorm may be cramped, but that doesn't mean your computer has to feel the same way. One plug-and-play accessory can give you more room to work or play on your computer, but it might be hard to go back once you've tried it.

The Mobile Pixels DUEX Plus is a super lightweight magnetic monitor that attaches to the back of your laptop. This portable monitor slides out when it's time to work and slides in when it's time to go. During the Back-to-School sale, you can get the Mobile Pixels DUEX Plus for just $249.97 through August 13.

A plug-and-play monitor with its own case 

The DUEX Plus started out on Kickstarter, where it earned over $1,000,000 from nearly 4,000 backers. And you can use it to make your untenable collection of open browser tabs seem a little less overwhelming.

The DUEX Plus has a sliding case that sticks to the back of your laptop monitor. When you don't need a second screen for your laptop, you can keep it comfortably tucked away. The DUEX Plus is also 30% lighter than previous models, so it's much easier to pop it onto your computer and go with limited extra weight. And when you need to stretch your legs and give yourself a little room to breathe, just slide your monitor to the left or right and plug it in. 

Though it's small, this monitor still has a lot to offer. The 1080p HD display is a great place to stream movies or TV shows while you study. Put your computer science homework on one screen and marathon your comfort shows on another. Plus, it's compatible with multiple devices. Plug in your laptop, Samsung DeX device, or even your Nintendo Switch. 

Save on a second monitor for your laptop

Get ready to go back to school by sticking a second monitor onto your laptop.

Until August 13 at 11:59 p.m. PT, get the Mobile Pixels DUEX Plus for $249.97. No coupon needed.

Prices subject to change.