@BLiNX:
Currently the internet served by a standard router with some UAPs, which doesn't have good firewall. As long as the internet connection fast & stable, security is not really important here. Mainly for entertainment/streaming purpose only.
@jahonix:
… Stay away from those cheap switches with "108E" in its name (TP-Link, Netgear).
I will avoid those SG105E & 108E, although they're support 802.1q. Just want to know why should I?
They leak traffic from the native LAN to the VLAN. My TP-Link access point does the same thing, which makes it useless for having multiple SSIDs and VLANs.