HP PL Class 450/500/550/600/650/700/750 User Manual page 95

Feature:
9-pin serial connectors
Disk drive shelves
System board connectors
Accessory slots
Keyboard/Mouse
HP UltraFlow cooling
system
Chapter 4
Description:
• Standard: Two UART 16550 buffered serial
ports (both RS-232-C).
• Serial Ports A and B: 2F8h (IRQ 3), 2E8h
(IRQ 3), 3F8h (IRQ 4), 3E8h (IRQ 4), or
Off—
(if one port uses 2xxh, the other port must
use 3xxh).
Seven mass storage shelves supporting:
• Two front-access, third-height, 3.5-inch
drives
• Three front-access, half-height, 5.25-inch
drives
• Two internal 3.5-inch hard disk drives
• One flexible disk drive connector
• One CD-ROM audio connector
• AUX connector
• Multimedia front panel connector
• Front panel MIC connector
• Internal speaker connector
• One external start connector
• External battery connector
• Three 32-bit PCI slots
• One 16-bit ISA (Industry Standard
Architecture) slot
• One combination ISA or PCI slot
• HP keyboard with mini-DIN connector
• HP mouse with mini-DIN connector
Cooling system with multiple temperature-
regulated fans to optimize cooling
Technical Information
Features
79