Kinda crazy all sorts of old network and server stuff discarded by enterprises is still WAY WAY WAY beyond whatever trash you can pick up for home networking down at the big box.
God I hate consumer grade network equipment. Even if you're just some average end user who just wants wifi to go on Facebook, Netflix, and YouTube, go for prosumer grade or better. If it's old, as long as it's 10/100/1000 and Wifi 5, it'll be more than you need, and rock solid.
"But I just [simple computer use], and don't want to tinker"
Yes, exactly. If you want to stick the box in the corner and not have to fuck with it for the next half decade, you want prosumer or better. The things on my network I constantly NEED to tinker with are the consumer grade shit. All my metal boxes get tinkered with because I WANT to fuck around with them. They'd happily keep doing their thing unattended for years and years.
Here's another way to get my point...
What does a business not want to spend, ever, unless it really must?
Money.
What does fucking around with network equipment cost in a business setting? Time, which costs money, cause they have to pay someone to fuck with it.
Miakoda 
RevK 
theothertom