Power Supply

1Chassis intrusion cable connector

2Control panel chassis intrusion connector

3Enlarged hole for cable

4Switch slot

5Chassis intrusion switch

CAUTION: Before you remove the computer cover, see "Precautionary Measures."

To remove the chassis intrusion switch and install a replacement, perform the following steps:

1.Disconnect the chassis intrusion switch cable from the control panel (see Figure 26).

Note the routing of the chassis intrusion cable as you remove the cable from the chassis. The cable is routed through an enlarged hole in the chassis and through a hole in the disk-drive cage door. The chassis intrusion switch is mounted on the left front of the chassis (see

Figure 26).

2.Slide the chassis intrusion switch out of its slot on the chassis and carefully remove the switch and its attached cable from the chassis.

3.Install the replacement chassis intrusion switch and cable.

4.Replace the computer cover. Then reconnect your computer and peripherals to their power sources, and turn them on.

NOTE: After you remove and replace the cover, the chassis intrusion detector will cause the following message to be displayed at the next system start-up:

ALERT! Cover was previously removed.

5.To reset the chassis intrusion detector, enter System Setup, select System Security, and reset Chassis Intrusion to Enabled or Enabled-Silent(see your User's Guide for instructions).

To access some components on the system board, you may have to rotate the system power supply out of the way. Use this procedure to rotate the supply out of the chassis, or to completely remove it.

To rotate or remove the power supply, perform the following steps.

CAUTION: Before you remove the computer cover, see "Precautionary Measures."

1.Remove the computer cover.

2.Lay the computer on its right side (as viewed from the front).

3.Disconnect the AC power cable from the AC power receptacle on the back of the power supply (see Figure 27).

Figure 27. Rotating the Power Supply

420 specifications

The Dell 420, 220, and 220S are well-regarded servers in the Dell PowerEdge lineup, showcasing robust performance and reliability for various enterprise applications. These servers are designed to meet the needs of small to medium-sized businesses, as well as larger enterprises seeking reliable computing solutions.

The Dell PowerEdge 420 stands out with its high-density architecture, optimized for virtualization and cloud applications. Equipped with Intel Xeon processors, it offers impressive processing power and scalability, supporting demanding workloads. With the ability to host multiple virtual machines, the 420 provides efficient resource utilization, ensuring that businesses can maximize their IT investments. The server also features advanced storage options, including the support for both traditional hard drives and solid-state drives, allowing for flexible data management and storage strategies.

In contrast, the Dell PowerEdge 220 and 220S are designed with simplicity and cost-effectiveness in mind. These servers feature tower and rack configurations that are ideal for environments with limited space. They leverage Intel's latest processor technologies, enhancing performance while maintaining energy efficiency. This makes the 220 series suitable for a variety of applications, including file and print services, web hosting, and database management.

One of the key characteristics of the Dell 220 and 220S is their ease of use. The systems are designed with straightforward setup procedures, allowing IT administrators to get them up and running quickly. Additionally, these servers come with Dell's OpenManage systems management tools, which offer comprehensive monitoring and management capabilities, enabling IT teams to maintain optimal server performance and reliability.

In terms of networking technologies, all three models support advanced network connectivity options, including multiple Ethernet ports and support for network interface cards (NICs) to ensure high-speed data transmission. Furthermore, they incorporate features such as redundancy in power supplies and cooling systems, enhancing overall system reliability and uptime.

Overall, the Dell 420, 220, and 220S represent a versatile range of server options that cater to varying business needs. With advancements in processing power, storage flexibility, and comprehensive management tools, these servers are well-suited for organizations looking to enhance their IT infrastructure while ensuring performance, reliability, and scalability.