The 2110VI 4908 device will need two rim cylinders.
If both are to be keyed cylinders then the part number would be:
Qty 2 - 12E72S2RP3-finish
If a thumb turn is needed for the inside and a keyed cylinder for the outside the part numbers would be:
Qty 1 - 12E72S2RP3-finish
Qty 1 – 1EA6A2S3RP3-finish