the vga we have under control. they want the remote to work for advancing slides and things. i saw some usb range extenders that use a cat 5 run between things. that might do the trick. On Wed, Sep 3, 2008 at 7:55 AM, Sorin Srbu <sorin.srbu@xxxxxxxxxxxxx> wrote: > Greg Reese <> scribbled on Wednesday, September 03, 2008 2:47 PM: > > > who knows what the maximum length is for a usb cable? > > > > we are putting in a ceiling mount projector and want to run a usb cable > > from the projector down to a wall plate we put in for connecting the vga > > etc. > > My experience is that 2m works almost always. 3m works reliable if the > usb-cable > is good quality. 4-5m rarely, if ever, works even with good quality cables. > > I think the theoretical max length is somewhere around 5m. > > In any case, this certainly didn't work during my experiment using > usb-over-ethernet with a 25m(...) tp-cable between the adapters. > > Some projectors can use wifi to transfer the image from computer to > projector. > Our Benq roof-mount projector can, but I think it may be considered being a > specialty product. This might be a better bet, if you need anything over > 3-5m. > > HTH. > -- > BW, > Sorin > ----------------------------------------------------------- > # Sorin Srbu [Sysadmin, Systems Engineer] > # Dept of Medicinal Chemistry, Phone: +46 (0)18-4714482 >3 signals> GSM > # Div of Org Pharm Chem, Mobile: +46 (0)701-718023 > # Box 574, Uppsala University, Fax: +46 (0)18-4714482 > # SE-751 23 Uppsala, Sweden Visit: BMC, Husargatan 3, D5:512b > # Web: http://www.orgfarm.uu.se > ----------------------------------------------------------- > # () ASCII ribbon campaign - Against html E-mail > # /\ > # > # MotD follows: > # Many of our departmental PCs won't run Vista. They don't make cinnamon > buns > either. In both cases nobody here much cares. -Me > >