All you need to do is get a disk or storage drive with enough storage capacity for the PC image and make a copy of the image on that storage drive or disk. Do not use the Clone key provided in the 128 GB kit in this case because its capacity is not sufficient.
Note: A computer scan may be recommended in this case, as an image larger than 128 GB is quite rare and potentially poses a risk to the business as too much work-related data is possibly saved on just that PC.