Mylex Corp, Fremont, California maker of disk controllers, says that weaker than anticipated demand for its RAID and HBA products is expected to cause first-quarter revenue to fall short of Wall Street expectations, and should come in as much as 15% under fourth-quarter revenue of $31.4m. The company warns that its net loss for the quarter will also be in excess of First Call’s consensus of $0.06 per share – somewhere in the range of $0.09 to $0.11 per share. Mylex says the weakness in demand is mostly evident in its business with small to mid-sized OEM customers and was compounded by the Asian currency crisis. Gross margins also suffered due to a shift in product mix. The company plans to release final results for the first quarter during the week of April 27.