ADAPTEC 2connect 4000 - Your desktop Windows or Macintosh computer will be enviably compatible and open to new connections, once you've installed this high speed 4-port USB 2.0 card. The 2connect 4000 is USB 2.0 certified, with USB 1.1 compatibility. USB 2.0 Transfer Rate - Up to 480 Mbps USB 1.1 Transfer Rate - Up to 12 Mbps Full USB-IF Hi-Speed Certification - Guaranteed USB 1.1 and 2.0 compatibility and hassle-free operation
I needed to get a USB2 card for my G4 so I could run a couple newer USB2 peripherals at speeds that weren't coma-inducing. I ran out and got this card, and it was as easy of an install as possible -- turn off the power, open the case, pop the card in, screw it in, close, reboot. OS X 10.2.6+ & 10.3 recognize this card out of the box from my experience. I haven't had any problems with this card at all since the day I bought it, and haven't given it much thought. I can't vouch for its performance in OS 9, however, since I don't boot into 9.
I've used many Adaptec SCSI controllers over the years and had good experiences with them. So when it came time to buy a USB 2.0 adapter I decided to spend the extra few bucks and go with them -- plus this card comes with a 5 year warranty.The NEC controller chip Adaptec uses on this PCI card works fine under Linux 2.6.6. Just be sure to enable both the ECHI *and* OCHI USB host drivers in the kernel. The OCHI drivers are used when USB 1.1 devices are inserted into this 2.0 card. I didn't realize this initially and thought there was something wrong with the card when I plugged in a 1.1 device and nothing happened. And, incidentally, if your motherboard has any built-in 1.1 ports you'll probably need to include the UHCI driver as well since Intel/VIA chipsets generally use this older USB controller standard.Linux 2.6.x is recommended for USB 2.0, but a recent 2.4.x kernel might also work if you're only trying to use USB mass storage devices.