The maximum number of IDE devices which can be installed in an ATX computer is ______.

A.
1

B.
2

C.
3

D.
4

Explanation:
ATX computer systems have a primary and a secondary IDE channel.
Each channel can support a master and a salve drive. This gives us for drives.
Newer ATX systems that support Serial ATA (SATA) only have a single parallel
ATA (PATA) IDE channel but will have two or more SATA connectors.
Reference:
David Groth and Dan Newland, A+ Complete Study Guide (2nd Edition), Sybex,
Alameda , CA , 2001, pp. 174.