Feb 11 : Cisco Systems posted quarterly adjusted gross margin below market estimates on Wednesday, as the networking equipment provider grapples with the fallout of a global memory price increase, sending its shares down 7 per cent in extended trading. The rapid build-out of artificial intelligence infrastructure by U.S. tech firms such as OpenAI, Alphabet and Microsoft has absorbed much of the world's memory chip supply, which has lifted prices as manufacturers prioritize components for higher-