OPC Web Service - Additional PC License This item is no longer available for online ordering. See below for details on alternate products or products that may have superceded this item. Product Summary Purchase of this item entitles you to install the OPC Web Service on one additional web server beyond the first one. In order to purchase this item, you must first own a license of the OPC Web Service Single PC License or the OPC Web Client. For full details on this product, please visit the OPC Web Client Focus Website. OPC Web Service - Additional PC License This item is no longer available for online ordering. See above for details on alternate products or products that may have superceded this item.