Add Yahoo as a preferred source to see more of our stories on Google. Emilija Manevska / Moment / Getty Images Old computer monitors may not be as large or alluring as new models, but most remain ...

Monitor USB ports are nothing more than extension cords.

The way a typical computer monitor works is simple. You connect to a PC or laptop, and it acts as a display for your computer. You can even use multiple monitors together to improve productivity.

After careful hands-on testing, we feature our favorite gear and gadgets as Mashable Selects products in our dedicated shopping guides. Last year, I was left with a gaping hole on my desk. While I’d ...