Connects up to 4 USB devices through a single USB port on a computer
Supports data transfer rates up to 480 Mbps
Backward compatible to USB 1.1 applications
Hot-swappable: add or remove a device at any time
3-year warranty
This review is from: Tripp Lite U222-004-R USB2.0 Certified Ultra Mini Hub with Extension Cable and 100-240V Adapter 4 PortThis item is smaller than a deck of cards and provides 4 powered USB 2 ports. The Amazon description indicates this is a USB 1.1 device. The literature indicates that it isa a USB 2 device. I required a powered hub for my notebook computer that was USB 1.1 compliant. My system indicates that the Hub would work faster on a USB 2 port - but it works without issues on my notebook. I bought this USB Hub because the manufacturer - TrippLite is a very reputable name and makes great products.
I have not been disappointed....
This review is from: Tripp Lite U222-004-R USB2.0 Certified Ultra Mini Hub with Extension Cable and 100-240V Adapter 4 PortI leave my original review intact - that said, this hub does not work correctly. I put it against a USB 'scope and watched the packets. It does not operate to spec. On most computers, this will not matter. On any with a strict USB implementation, this does not meet it. That explains the behavior on the G4 laptop with/without power adapter plugged in. On a desktop, the power issue will never come into play, which is why it apparently works, but on many laptops, it will fail, even with power plugged in.
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I got this hub to provide me with 4 USB 2.0 ports on my Apple Powerbook G4. My iPod Shuffle needed power and would not mount via 2.0, only the USB1.1 port. This is advertised as a powered hub and I did in fact plug it in, but apparently it does not announce itself as such to the computer. My thumb drive would not work through the hub -- it would work directly -- power or no power. I kept getting low power warnings and the drive wouldn't appear. The Shuffle just didn't work - but I did not expect it to at this point.
I know the USB2.0 port on this laptop in a little strict in its implementation, but the hub should have at least powered a thumb drive (it did light its LED) and allow the computer to detect it. I returned it and got a small Belkin four-port powered hub called the "Clip Hub". Plugged it in and connected it with two thumb drives, and my iPod shuffle to the same USB port on the laptop -- no problems and quick performance....
This review is from: Tripp Lite U222-004-R USB2.0 Certified Ultra Mini Hub with Extension Cable and 100-240V Adapter 4 PortThe hub I got doesn't look like the one in the picture. This one is silver with a blue light in the middle of it and all four of the ports are on one side. The one I got works fine. It is ideal for a laptop. Just in case you are wondering thr cord which attaches to the computer IS that short....
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