Dell ST2420LB, ST2421LB appendix Maintenance Guidelines, Environmental, Plug and Play Capability

Dimensions (with stand)

Height	418.24 mm (16.47 inches)
Width	574.96 mm (22.64 inches)
Depth	203.68 mm (8.02 inches)
Dimensions (without stand)
Height	356.43 mm (14.03 inches)
Width	574.96 mm (22.64 inches)
Depth	59.72 mm (2.35 inches)
Stand dimensions
Height	149.85 mm ( 5.90 inches)
Width	203.68 mm (8.02 inches)
Depth	203.68 mm (8.02 inches)
Weight
Weight with packaging	5.75 kg (12.68 lb)
Weight with stand assembly and	4.29 kg (9.46 lb)
cables
Weight without stand assembly
(for wall mount or VESA mount	3.65 kg (8.05 lb)
considerations - no cables)
Weight of stand assembly	0.64 kg (1.41 lb)

Environmental

Model

Temperature

ST2420L/ST2421L

Operating	0° to 40° C (32° to 104°F)
Non-operating	Storage: -20° to 60° C (-4° to 140° F)
	Shipping: -20° to 60° C (-4° to 140° F)
Humidity
Operating	10% to 80% (non-condensing)
Non-operating	Storage: 5% to 90% (non-condensing)
	Shipping: 5% to 90% (non-condensing)
Altitude
Operating	4,485 m (14,700 ft) max
Non-operating	12,191 m (40,000 ft) max
Thermal dissipation	102.36 BTU/hour (maximum)
	68.24 BTU/hour (typical)

Plug and Play Capability

You can install the monitor in any Plug and Play-compatible system. The monitor automatically provides the computer system with its Extended Display Identification Data (EDID) using Display Data Channel (DDC) protocols so that the system can configure itself and optimize the monitor settings. If required, the user can select different settings, but in most cases monitor installation is automatic.

LCD Monitor Quality & Pixel Policy

During the LCD Monitor manufacturing process, it is not uncommon for one or more pixels to become fixed in an unchanging state. The visible result is a fixed pixel that appears as an extremely tiny dark or bright discolored spot. When the pixel remains permanently lit, it is known as a "bright dot." When the pixel remains black, it is known as a "dark dot."

In almost every case, these fixed pixels are hard to see and do not detract from display quality or usability. A display with 1 to 5 fixed pixels is considered normal and within competitive standards. For more information, see Dell Support site at: support.dell.com.

Maintenance Guidelines