Content originally posted in LPCWare by Parsa on Sat Aug 01 09:39:23 MST 2015 Hi friends I use lpc1768 board and Setting up SD card with RL-FlashFS LIB. now it works correctly . I also use this example for USB HOST Keil->ARM->Boards->MCB1700->RL->USB->HOST->MSD_File. I can use this demo and USB works correctly too. Now, I want to copy some text file from SD to USB. In this context, I saw this pagehttps://www.lpcware.com/content/project/Dual-USB-Host-Device-solution?destination=node%252F1106929 I think, I need the operation like that. Is it possible? and how much is the rate of transmission? Thanks for any idea