vt92

Hello all, I'm looking for a DAQ device that meets the following requirements: 1.) USB interface 2.) At least one 12 or 16 bit D/A port 3.) At least one 12 or 16 bit A/D port 4.) At least 8 I/O channels 5.) On board pulse generation capability. (square wave, 1 Hz - 10kHz) I have waded through NI, Measurement computing, etc and haven't found exactly what I want. Your recommendations would be appreciated.