Super Micro Computer's shares slipped more than 9 per cent in premarket trading on Wednesday after the artificial intelligence (AI)-focused server maker missed quarterly profit and revenue estimates, citing delayed deliveries tied to design changes. The company said "design win upgrades" pushed about $1.5 billion in expected first-quarter revenue into the current period, after a high-volume customer requested configuration changes to the graphics processing unit (GPU) racks. CEO Charles Liang