Lenovo United States Hardware
Announcement 109-627
Lenovo is a registered trademark of Lenovo Corporation
3
• Detachable base for wall- or arm-mounting (sold separately)
• Available in business black
1
As defined by EPEAT verification criteria for calculation of post-consumer recycled content.
Many plastic parts used in this product consists of (by weight) 65% post-consumer content
from sources like home appliances, computers, vehicles, and office equipment.
2
EPEAT registration status varies by location. For a complete country listing, visit
http://www.epeat.net
Planned availability date
October 23, 2009
Description
VESA high refresh video signal timings
This Lenovo ThinkVision L2251p Wide monitor supports a wide range of display
modes, including a selection of the VESA timings of incoming video signals at up to
75 Hz (non-interlaced) for the following screen resolutions:
• 640 x 480
• 800 x 600
• 1024 x 768
• 1280 x 1024
• 1440 x 900
• 1680 x 1050
Appropriate video-adapter hardware and software must be installed in the attaching
system unit (not included).
Monitors are compatible with popular Lenovo PC system units.
VESA Data Display Channel (DDC)
This Lenovo ThinkVision L2251p Wide monitor supports the DDC protocol to level
command interface (CI). Basic configuration information can be passed to a system
unit from its attached monitor. Often referred to as Plug and Play, the protocol
enables a DDC-enabled system unit to automatically configure the video adapter to
drive the attached monitor at its optimum display mode without user intervention.
For best use, the attaching system unit must also be hardware- and software-
enabled for DDC operation.
The capabilities of the monitor are held in nonvolatile monitor memory in an
encoded format. The data is received from the monitor by the system unit during
boot-up and system configuration.
The extended display identification data (EDID) sent by the monitor to the attached
system unit also includes the monitor's serial number and other identification
information. This can be held in the system unit until requested; for example, by a
department local area network (LAN) administrator needing to assess the location of
all equipment connected to the LAN.
Date information transmitted in the monitor EDID data conforms to VESA EDID
standard V2. This requires the year of manufacture (YOM) to be stored in a one-byte
field as an offset from 1990 as derived from the following equation:
Value stored = (YOM - 1990)