I recently purchased the following hardware in a multiple of 3 and assembled and configured 2, and the 3rd I was unable to talk with via hyperterminal.  The LED was lit when attempting to communicate with the unit, and as mentioned, the 2 other units were immediately.

 

Any troubleshooting suggestions or an RMA? 

 

gumstix connex 400xm (GS400J-XM)

console-st (BRD00003)

netMMC (BRD00018)

 

Thanks for any info.

 

Erik Mueller