Use appropriate hardware for Gigabit setup, such as a high-speed network interface card and compatible cables.
Use appropriate hardware for Gigabit setup, such as a high-speed network interface card and compatible cables.
It's a good idea to consider upgrading your switch for better performance. With a 350 Meg connection and a Gigabit switch, you're already close to the limit. If you plan to use higher speeds in the future, having a faster switch will provide more headroom and avoid potential bottlenecks.
Your gigabit switch is sufficient and won't become a constraint.
Unless you manually transfer files between those computers while downloading, which is unlikely unless you're copying at the same time. I understand that for most users this isn't a concern.
You're okay with your current speed until you surpass gigabit rates from your ISP. The main reasons others use 2.5G, 5G, or 10G are because they have at least 1G or higher from their provider and/or they move large amounts of data across the network. For example, I have a 10G fiber switch at home so I can send files between my PC and NAS more quickly. It's completely unnecessary but it feels great to have it.