I've used these before http://www.cdwg.com/shop/products/TRENDnet-TU2-EX12-USB-extension-cable-39-= ft/2382000.aspx They are A to A cables, 39 feet long, and cost about $30 (USD). Cris Wilson Information Resource Consultant College of Architecture, Arts, and Humanities Clemson University 864-656-6081 -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of= Harold Hallikainen Sent: Monday, December 05, 2011 8:18 PM To: Pic List Subject: [EE] LONG USB Power Cable To take advantage of low cost USB style power supplies, I did a product tha= t uses an USB mini B connector as the power input. No data goes across the = USB bus. I can find low cost A to mini-B cables out to about 10 feet. But, of course, I have a customer that wants to put the wall mount power su= pply 30 feet away. He doesn't like stringing USB extension cords. So... Anyone know of a 30 foot USB power cable (no data lines required, just grou= nd and +5VDC with an A connector at one end and a mini-B at the other)? THANKS! Harold -- FCC Rules Updated Daily at http://www.hallikainen.com - Advertising opportu= nities available! Not sent from an iPhone. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membershi= p options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .