Syntheos gshield v5 ( GRBL TinyG )

Description

This is a new sealed-in-bag Syntheos gshield v5 to run GRBL or the TinyG Due port on an Arduino Uno or Due.
Thanks for looking!
From the manufacturer:
The new v5 version of the gShield, formerly grblShield. Other than the price, there is very little difference between the v4 and the v5. Both can be used on the Arduino Uno to run grbl, or on the Arduino Due to run the
TinyG Due port
. The v5 power jumper simply allows the gShield to be run as a native 3.3v device from the Due, instead of a 5v device. There are no other functional differences.
Should I use a gShield?
The Arduino gShield is a complete hardware solution for Dank's CNC motion control system called
grbl
.  The gShield is also used in the Inventables "
X-Carve
" CNC machine.  The gShield is also a good choice for any Shapeoko based machine.
Compatible with the Uno and Duemilanove versions of the Arduino development platform.
Features:
2.5 Amps per winding
12-30 Input Voltage
Open Pin Pass Through
8x Microstepping
Screw Down Terminal Voltage Input
Hardware 3x Axis (x,y,z)
3x Robust TI DRV8818 Stepper Drivers