I'd always recommend buying Netgear, so this will do ya
http://www.scan.co.uk/products/netge...managed-switch
Or spend another 5 and get the 8 port version (you need to use 4 ports as it is, one to link to the router, one to the pc and 2 printers - might as well build in a little redundancy in case something like a NAS box is required.
http://www.scan.co.uk/products/8-por...managed-switch
You dont really need Gig-E capabilities from how you describe things so might as well save the tenner that would cost.