HP kp721av Manuale Utente

Pagina di 120
Technical Reference Guide
www.hp.com
2-9
System Overview
2.3.5 Mass Storage
All models support at least two mass storage devices, with one being externally accessible for 
removable media. These systems provide the following interfaces for internal storage devices:
USDT: two SATA interfaces
SFF: three SATA interfaces and one eSATA port
CMT: four SATA interfaces and one eSATA port
These systems may be preconfigured or upgraded with a SATA hard drive and one removable 
media drive such as a CD-ROM drive. 
2.3.6 Serial Interface
The SFF and CMT form factors include a serial port accessible at the rear of the chassis. The SFF 
and CMT form factors may be upgraded with a second serial port option. The serial interface is 
RS-232-C/16550-compatible and supports standard baud rates up to 115,200 as well as two 
high-speed baud rates of 230K and 460K. 
2.3.7 Universal Serial Bus Interface
All models provide ten Universal Serial Bus (USB) ports. Two ports are accessible at the front of 
the unit, six ports are accessible on the rear panel, and two ports are accessible through a header 
on the system board. The SFF and CMT form factors support a media card reader module that 
connects to the internal header. These systems support USB 1.1 and 2.0 functionality on all ports.
BIOS Setup allows for the disabling of USB ports individually or in groups.  In order to secure 
the system against a physical attack, ports may be disabled even if there is nothing physically 
connected to them, such as the two front ports for the media card reader module when the 
module is not present.
2.3.8 Network Interface Controller
All models feature an Intel gigabit Network Interface Controller (NIC) integrated on the system 
board. The controller provides automatic selection of 10BASE-T, 100BASE-TX, or 
1000BASE-T operation with a local area network and includes power-down, wake-up, 
Alert-On-LAN (AOL), Alert Standard Format (ASF), and AMT features. An RJ-45 connector 
with status LEDs is provided on the rear panel.