WD1004A-27X Description WD1004A-27X, feature F300R - Half-slot size hard disk controller with an ST506/ST412 interface. It supports 2 RLL drives with up to 16 heads and 1024 cylinders. Built-in ROM BIOS supports non-standard drive types, virtual drive formatting, bad track formatting and dynamic formatting. The following is a list of common hard disk drives which have been found to be compatible with the WD1004A-27X. For a more complete list of hard disk drives and their parameters, return to the STORAGE PRODUCTS menu. Controller: WD1004A-27X Drive Formatted Capacity Western Digital - WD344 41 Megabyte - WD382R 20 Megabyte - WD384R 41 Megabyte Seagate - ST138R 32 Megabyte - ST238 & 238R 32 Megabyte - ST277R 65 Megabyte Miniscribe - 3438 32 Megabyte - 6079 68 Megabyte - 6128 110 Megabyte Maxtor - XT-1120R 104 Megabyte Fuji - FK305-39R 32 Megabyte - FK305-58R 49 Megabyte CDC - 94205-77 63 Megabyte