一、主板规格尺寸

Mini-ITX (170*170mm)

ATX (305*244mm)

Micro-ATX (244*244mm)

FlexATX (229*191mm)

XL-ATX (343*262mm)

E-ATX (305*330mm)

EE-ATX (347*330mm)

HPTX (345*381mm)

WTX (356*425mm)

μATX (244*185mm)

二 、硬盘规格尺寸

2.5寸硬盘

2.5寸硬盘的相关规范主要由SFF（Small Form Factor Special Interest Group）制定，常见的规范号包括以下几个：

1. SFF-8201: Specification for 2.5" Drives - General.
2. SFF-8223: Specification for 2.5" Drive Form Factor with Serial Attachment (SAS/SATA).
3. SFF-8228: Specification for 2.5" Drive Form Factor with Fibre Channel Attachment.

3.5寸硬盘

3.5寸硬盘的规范由SFF（Small Form Factor Special Interest Group）制定，常见的规范号包括以下几个：

1. SFF-8300: Specification for 3.5" Drives - General.
2. SFF-8323: Specification for 3.5" Drive Form Factor with Serial Attachment (SAS/SATA).
3. SFF-8328: Specification for 3.5" Drive Form Factor with Fibre Channel Attachment.

参考：

• https://members.snia.org/document/dl/25862

三、SATA接口尺寸

2.5寸硬盘SATA接口尺寸

3.5寸硬盘SATA接口尺寸

参考

• https://zh.wikipedia.org/wiki/%E4%B8%BB%E6%A9%9F%E6%9D%BF%E8%A6%8F%E6%A0%BC%E6%AF%94%E8%BC%83