Bought this on Ebay for a bargain £1 to expand my network. I've since replaced it with another 3Com hub (check out my other reviews), but thought I'd still let you know a little about it.
It's an entry-level, 4 port hub, but only 10BASE-T, rather than the faster 100BASE-TX - that's why I upgraded, so you can connect 4 users together.
There's one (manually switched) MDI-MDIX port to provide simple "in" connection from a server, switch, or hub, and three other female RJ-45 ports to send the network signal out to 3 other items.
The hub has an external power supply and a "CoolCurve" self-cooling design eliminating the need for a noisy fan. Its dimensions (height: 3.6cm, width: 23.1cm, depth: 13.6cm) allow it to fit nicely with other 3Com OfficeConnect units - special stacking clips are available.
It's an "unmanaged" hub, so there's no software to install anywhere, it's just a case of connecting it up with standard "straight-through" ethernet cables and you're away ! LED lights on the front signal Power, Activity & Error, and status of each of the 4 ports.
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Overall, it's a useful item if you need more network connections, and "does exactly what it says on the tin", but if I were you, I'd go straight to a 100BASE-TX hub.
I hope this helps...
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