#2844 is a PCI I/O processor that drive PCI IOA adapters in the system unit and in HSL attached PCI-X I/O towers/units.
#2844 can drive a maximum of four IOAs, subject to configuration restrictions.
These features require OS/400 V5R2, plus updates. Refer to Informational APAR II13440 at: http://www.ibm.com/eserver/iseries/support
Supported on the following systems: 520, 550, 570, 595, 810, 820, 825, 830, 840, 870, 890