From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 In-Reply-To: <4966b6590436322b2ca11f5162a547e6@coraid.com> References: <6e0e380ce6e806aba2352efd107d264a@brasstown.quanstro.net> <10023947-0D3C-4AFB-A112-AD3470D03832@gmail.com> <4966b6590436322b2ca11f5162a547e6@coraid.com> Date: Fri, 7 Jan 2011 17:48:44 +0100 Message-ID: From: Francisco J Ballesteros To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Content-Type: text/plain; charset=UTF-8 Subject: Re: [9fans] usb vid/did Topicbox-Message-UUID: 91784a7c-ead6-11e9-9d60-3106f5b1d025 Ah. A root hub is an invention of the usb std. There's no such thing. It's the controller. It can be that usbd does not write vid/did for root hubs, perhaps. I've not seen a root hub in a keyboard. If it's a usb keyboard, it can't be a root hub, because you have to plug the kbd into a port, which belongs to a hub, root or not. On Fri, Jan 7, 2011 at 4:59 PM, erik quanstrom wrote: >>> ep3.0/ctl:hub csp 0x000009 ports 3 'Mitsumi Electric' 'Hub in Apple Extended USB Keyboard' ehci > >>I do see vids/dids just not for hubs. > > perhaps i misunderstand what is ment by a "root hub". > i thought that ment that it was a hub that usb(3) invented. > a hub in a keyboard can't be a root hub, can it? > > - erik > >