Not much to say about this really. I bought this for a pound (!) on Ebay to connect to my router giving me 4 more ethernet ports to connect stuff to my network. That's all it does, gives you more connection; there's no firewall, DCHP, nothing, but then that's all in my router.
Its 5 autosensing ports (Ethernet 10Base-T/100Base-TX - RJ-45)automatically detect the speed of the attached device to maximize network performance - with a data transfer rate of up to 100 Mbps.
It really was a "plug-and-play" installation with no configuration needed, it connected straight into my network - I didn't even ned to read the manual ! The auto-sensing feature means that you can plug the "in" cable into any socket - another 3Com switch I have has a specific "in" port.
It's nice and small (Weight 0.6 kg, Height 4.2 cm, depth 13.5 cm, Width 22.8 cm), and being the same size as my Office Connct wireless access point, looks great too, with LED status indicators on the front show power, port status/activity & duplex-ing. The Ciao picture's not quite right, I think, as the switch doesn't have a curved back to it...
It would be a shame if something I bought for a pound did not meet my expectations, and there's certainly no dissapointment here ! If you need to connect more stuff to your network - more PC's, network storage, print server etc - then this is a great option.