Microcomputers, Desktop or Towerbased N/A for this phase. Amendment #5 extends the term until 12/31/2021 Amendment #4 increases VCAF, clarifies Ordering Instruments and Payment Methods, adjusts pricing, extends term. Amendment #3 adds Federal terms and conditions, and extends term. Amendment #2 offers cost savings in several categories, better defines "Related Services", and extends the term. Amendment #1 extends term only. Mandatory PO language, as follows: This Purchase Order,