All chips are socketed for easy repair in the future.
This Serial board can be used to upgrade diskless Model III and 4 (26-1061, 26-1062, and 26-1067) with serial interface capability, or it can also be used to replaced a failed or missing Serial board on a disk-based Model III or 4 (Model III 26-1063, 1064, 1065 or Model 4 26-1068 and 26-1069).
NOTE: This interface cannot be used with, and is not designed for the Model 4 Gate-Array version (26-1068A, 1069A), 4D (26-1070) or 4P (26-1080 and 1080A).
Shipping will be $13.50 worldwide.