Everyone knows the versatility of arduino shields and the power of mbed boards so why don’t to design an adapter which allows to use arduino shields with mbed? This is the schematic of our version of such adapter:
As you can see it is compatible with both mbed LPC1768 (http://mbed.org/platforms/mbed-LPC1768/) and mbed LPC11U24 (http://mbed.org/platforms/mbed-LPC11U24/) and has a USB type A connector and a ethernet connector, useful in your projects with TCP/IP and LPC1768. A DC plug and a 5V LDO regulator Reg1117 has been added to supply power to the mbed and to the shield in a very easy way, if you don’t want to use the USB as a power supply.