Jeff1

I don't believe this above response is correct. The -NC designator is what determines that its a "no USB connector variant". Digikey has both part numbers setup 410-308 and 410-308-B. They do not differentiate what the -B means, neither does the datasheet on Digilent's website. Digikey shows both "Manufacturer Products Numbers" with the same description of MOD PROGRAMMING JTAG-SMT2-NC. Both Mouser and Digikey show both part number options. Mouser lists "tray" in the description of the 410-308-B number. Does the -B define tray vs another packaging option? Does the -B define a different revision? I cannot use the new -B part number without understanding the difference and it appears to be in stock more places.