Western Digital (WDC) guides on its FQ4 call for FQ1 revenue of $3.7B-$3.8B and EPS of $1.95-$2.05, largely unfavorable to a consensus of $3.77B and $2.05. Shares now -5.9% AH. Seagate (STX) -2.1% in sympathy. In its quarterly fact sheet, WDC states its total hard drive shipments fell 16% Y/Y in FQ4 to 59.9M, as 27% and 24% drops in notebook and desktop drive shipments (over 2/3 of total shipments) offset consumer electronics and branded drive growth, and roughly flat enterprise shipments. WDC and STX both fell in regular trading thanks to Seagate's numbers (I, II, III).