Asus 5U Tower Chassis Kit AK35 - Manual (Page 20)

Chapter 2: Hardware setup 2-4
2.3 Motherboard installation
2.3.1 Motherboard dimensions
This chassis kit supports an ASUS motherboard that measures 12x13
inches (30.5 x 33 cm) for SCSI models, or 12x12 inches (30.5 x 30.5 cm)
for IDE models. Motherboards of smaller sizes will fit into the system
chassis. Refer to the motherboard user guide for more information on the
system requirements.
13 in (33 cm)
12 in (30.5 cm)
Make sure that the motherboard you intend to install into the chassis
does not exceed the maximum specified dimensions. Otherwise, it will
not fit into the chassis.
This section only describes how to install a supported motherboard into
the AK35 chassis kit. Refer to the motherboard user guide for
instructions on installing specific motherboard components.