PCA-17 is a set of 17 international performance standards for the monitoring, assessment, and evaluation of personal computers developed by the International Organization for Standardization (ISO). These standards are used to define a base level of performance for PCs, helping to make sure that computer systems meet a minimum level of performance. The standards measure everything from processor performance to data throughput rates and input/output connections. They also provide guidelines for maximizing security, reliability, productivity, and compatibility. Additionally, PCA-17 also provides for certification so that when companies purchase items that meet its standards, they can be certain of their quality.