There are many reasons to slow wireless internet access.
1. slow wireless interfaces, still using B (11mbps) or G (54mbps) standards?
2. weak signal
-> router/access point's signal strength
-> placement of antennae, number of antennae, placement of router/access point
-> obstacle between source and destination (thick walls, cornering, etc)
-> interference (EM from electronics)
Wireless is usually used if wired network is not possible due to environmental restrictions. There's a few ways to boost wireless network speed.
1. install a repeater router/access point between source and destination
2. upgrade all wireless interfaces to N standard or faster
3. install a stronger and bigger antennae
4. place the router/access point in an open space instead of a distant corner, and away from any electronics that will emit strong EM, eg. TV, amplifier, etc.
Wireless is convenient as there is not a need for wiring and trunking installation. Down side is a little more configuration, might cause interference to other devices and EM radiation.
Back to TS's question, you can split the LAN port into 2, provided you know what you are doing. :bsmilie: But this option might cause other problem.
So, to make things simple, just get a switch and install at one of your LAN ports to expand. A 5-port 10/100mbps switch should be less than S$50. A 5-port 100/1000mpbs switch might be in the region of $80-$150.
My advice is, depends on what LAN interface u have in your computers, then get the appropriate switch. Unless you are certain that you will be upgrading to the gigabit speed in the near future, then get the 100/1000mbps switch.
Another alternative is to get a wireless gateway with a 4-port switch. First u can get ur internet connection with your ISP, second you can get wireless connection if you ever need it (notebooks, ipod, ipad, etc), and you get a 4-port LAN switch. Price from S$80-300, depending on specs.