The maintenance of a Buy rating suggests that Needham's outlook on Plexus remains positive, indicating continued confidence in the company's fundamentals and growth prospects. However, the reduction in the price target could reflect a minor adjustment in expectations, possibly due to market conditions or revised earnings estimates. This news is likely to have a neutral to slightly positive impact on Plexus's stock price in the short term as it reaffirms investor confidence but also signals a slight caution.