At 11:52 PM -0500 2/11/2003, Anonymous Prime wrote: > >How much power (Apmeres) does an iMac RevB but out through USB port?
The maximum is 500mA at 5V. I suppose some equipment might not source this much but I haven't heard of any. > > >>Is there a way to measure this, smomeone already done this? > >Apple System Profiler can give you the info for each USB device you have >connected, including power requirements. The max for each port is 500mA. >You'll need a powered hub if you have more devices than your system can >provide power for. One problem with many USB implementations is that devices report they need is 500mA regardless of the actual need. This means that an un-powered hub can't be used as the system will calculate an overload even though none really exists. > >I've gotten the impression from somewhere (this list, I think) that the >OS will inform you if you have a USB port overloaded. Is this correct? > yes -- Clark Martin Redwood City, CA, USA Macintosh / Internet Consulting "I'm a designated driver on the Information Super Highway" -- The iMac List is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | - Epson Stylus Color 580 Printers - new at $69 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> iMac List info: <http://lowendmac.com/imac/list.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/imac-list%40mail.maclaunch.com/> --------------------------------------------------------------- >The Think Different Store http://www.ThinkDifferentStore.com ---------------------------------------------------------------
