1-5Model 744 Board Computer OverviewProduct DescriptionNOTE: Either a GSC expansion kit or the HCRX expansion graphics boards extendgraphics capability beyond the on-board graphics chip set of a Model 744Board Computer. However, the HP-RT operating system supports only onegraphics display, and HP-UX 10.x supports up to three graphics displays.• Main MemorySingle VME slot 744: 32, 64, or 128 MB RAMSingle VME slot 744 with HP-RT: 16 to 128 MB RAMDual VME slot 744: 32 to 512 MB RAMDual VME slot 744 with HP-RT operating system: 16 to 512 MBRAM (Dual slot means an expansion kit or HCRX board must beinstalled.)NOTE: A Model 744 configured for more than one RAM card requires installation ofa PMC bridge board, a GSC expansion kit, or an HCRX graphics board,thereby occupying two VME slots.Up to four RAM cards may be installed.When mixing memory card capacities that include 128MB cards,the 128MB card(s) must be installed into the lowest memory slotsbefore adding cards of other capacities.• Standard FeaturesInternal SCSI-2 single-ended bus2 asynchronous RS-232-C ports (requires a conversion cable)1 HP parallel port (requires a conversion cable)1 LAN AUI port (requires a conversion cable)2 mini-DIN PS/2 ports1 slot for RAM memory (memory cards can be stacked)CD-quality audio, supported only by HP-UX and requires aconversion cablePCMCIA adapter, supported only by HP-RT (not supported onModel 744 with on-board graphics)