One office, one ethernet jack and two computers, or
One living room, one ethernet jack and one HTPC and one XBox.
If you can't realistically (without tearing apart walls or renting a scissor lift) pull one more ethernet cable from the patch panel to the office / living room etc. you can consider the use of an Ethernet "splitter".
I'm assuming all the four pairs of the ethernet cables are properly connected within the ethernet wallplate and the patch panel.
Step 1: What you need
- Two RJ45 Crimpable Plug
- Four RJ-45 keystone jack
- Short Ethernet Cable Scrap (approximately 2 feet)
- RJ45 Crimp Tool
- Craft knife
- 110 Punch Down Tool
- Loctite Super Glue