Imported Items can be pretty bad over WiFi and even 100 Mbit wired depending on the number of computers and users you have. IIs are getting larger when you start including large PDFs and images. If you have 5 users accessing 2MB PDF files, you've swamped a 100 Mbit connection, and probably overpowered WiFi. That's why we recommend gigabit switches. Files are getting bigger and bigger as time goes on. Best to be ready. You can grab a Cisco Small Business 16 Port Gigabit switch for $180 (
http://www.newegg.com/Product/Product.aspx?Item=N82E16833150078&Tpk=SR2016). You can find them for less than $100. (
http://www.newegg.com/Product/Product.aspx?Item=33-704-064). Cisco is the premium brand out of these 2 and that costs a bit more. They do live up to the name though (most of the time). Gigabit has 10 times the bandwith of a 100 Mbit switch for maybe a 20% higher price tag. For things to operate at gigabit speeds, you need a gigabit NIC. Pretty much standard on all devices nowadays.