[Linux-usb-users] How to add a 2nd PCI-USB host

[Simon Wu]

PLEASE REPLY ALL AS I AM NOT ON THE MAILING LIST

Hello,

I have a Dell Pentium3 PC which has a built-in USB host. I need to expand the USB ports so I added a 4-port USB1.1 hub. However when I connected more than two 384kbps modems (ACM modem) to the hub, the speed on some modem drop dramatically. It only support up to two 384ktps modems. I thought the HUB should be able to support 4 modems with full speed because the total rate is only about 1/10 of 12Mb/s supported by USB1.1. Anyone know what could be the problem?

So, I decided to add a 2nd PCI-USB host(USB2.0 hardware). My redhat linux 7.2 can detect the hardware at boot up, and installed the driver. But when I put the modem on the 2nd host (the PCI one), the linux system couldn't detect the modem. Can we config Redhat7.2 for more than one root hosts?

The other question is is USB2.0 available for Redhat 7.2? If so, will upgrade to USB2.0 solve my problem. Or do I have to use PCs with built-in USB2.0 host?


Thanks,


Simon




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