Free Business Desktop Icons has plenty of options, but none of the icons it presents are real home runs. There are too many retreads and repeats that limit your choices. While you'll probably be able to get some use out of these, you'll be downloading a lot of stuff you'll never use to do it.
This is a collection of animated icons that you could use to decorate a business card, Web site, letterhead, or other official business document. Though there are dozens upon dozens of options, there are only nine designs that are made in multiple sizes, formats, and colors. That means you really only get to choose from a small handful of icons like a printer, a clock, a calculator, and other things you might find in an office. Free Business Desktop Icons will be able to work with most businesses, but they won't say much about your brand's identity, work, or beliefs.
It's an impressive selection of icons until you dig deep into what's here and realize that there isn't all that much available. Free Business Desktop Icons is a fine place to start when you're designing your business' logo, but there's not enough here to make it the only resource you should use. Luckily, there are plenty of free, hi-res icons you can find elsewhere.