Specification Sheet

Note:
SFF-8301 specification from the industry-standard Small Form Factor (SFF) committee defines
the dimensions for 3.5 inch Form Factor Disk Drives.
SFF-8301 defines three pairs of bottom mounting holes as follows:
Source: SFF Committee, SFF-8301 Specification for Form Factor of 3.5" Disk Drives Rev 1.6
March 16, 2010
"The pair of bottom mounting holes located by dimension A7 is required. One additional pair of
bottom mounting holes are required, either the pair of mounting holes located by dimension A6
or the pair of mounting holes located by dimension A13. Providing all three pairs of mounting
holes (located by dimensions A7, A6 and A13) is allowed."