HP 98568A Installation Instruction page 181

HP 98562-66530 Human (System) Interface Board
Description and Support
The HP 98562-66530 Human Interface board (also called the System
Interface board) includes an RS-232C Serial interface, an HP-HIL interface, a
standard-speed HP-IB interface, a DMA controller, and a Local Area Network
(LAN) interface. You can also get an Optional interface (such as an optional
Disk interface or SCSI) in addition to those mentioned above.
HP 98562-66530 Human (System) Interface Board
Series 300 HP-UX Operating System Support
on Release with Model
5.2 or later 330
350
Adding Interface Cards 5-85