Modifications compared to the original are :
-comes as bundle with enclosure for standalone use
-Updated power section Isolated USB power supply. Proper voltage reference. Upgraded filtering. This greatly reduce the noise on the outputs. (Measured at less than 6mV)
-Selectable 5v or 10V outputs: Each can be configured to output either 10V or 5V using a dip switch on the back of the module (even when using 5V USB power supply)
-Outputs facing upwards: The outputs will be directly on the front panel reducing the footprint and making outputs much more accessible.
-Eurorack compatible: You would be able to mount the 16n as a 50hp module in your rack and power it from your own power supply. (+12V=42mA, -12V=0mA)
-I2C connector on the PCB to simplify connection to modules like the ER301