An IT support technician is often called on to research equipment to maintain or improve a computer or network and make recommendations for purchase. Suppose you are asked to upgrade a small network that consists of one switch and four computers from 100BaseT to Gigabit Ethernet. The switch connects to a router that already supports Gigabit Ethernet. Do the following to price the hardware needed for this upgrade: 3. Find three network adapters by different manufacturers to install in the desktop computers to support Gigabit Ethernet. Save or print webpages for each NIC. 4. Compare features of the three network adapters. What additional information do you need to know before you make your recommendation?