Product comparison · 2 monitors

Lenovo ThinkVision LS2251 computer monitor vs Lenovo ThinkVision LS2421p computer monitor

53specifications compared
11differ
42identical
23known for one product only

Key differences

Display diagonal
- ThinkVision LS2251 computer monitor:55.9 cm (22")
- ThinkVision LS2421p computer monitor:59.9 cm (23.6")
Display resolution
- ThinkVision LS2251 computer monitor:1680 x 1050 pixels
- ThinkVision LS2421p computer monitor:1920 x 1080 pixels
Native aspect ratio
- ThinkVision LS2251 computer monitor:16:10
- ThinkVision LS2421p computer monitor:16:9
Display brightness (typical)
- ThinkVision LS2251 computer monitor:250 cd/m²
- ThinkVision LS2421p computer monitor:300 cd/m²
Aspect ratio
- ThinkVision LS2251 computer monitor:16:10
- ThinkVision LS2421p computer monitor:16:9
Pixel pitch
- ThinkVision LS2251 computer monitor:0.282 x 0.282 mm
- ThinkVision LS2421p computer monitor:0.2715 x 0.2715 mm
Viewable size diagonal
- ThinkVision LS2251 computer monitor:55.8 cm
- ThinkVision LS2421p computer monitor:59.8 cm
Power consumption (typical)
- ThinkVision LS2251 computer monitor:25 W
- ThinkVision LS2421p computer monitor:30 W

Side by side

Differences highlightedShow differences only

Comparison of LS2251, LS2421p
76 specifications	A Lenovo ThinkVision LS2251 computer monitor Model LS2251 View product	B Lenovo ThinkVision LS2421p computer monitor Model LS2421p View product
Display8 differ
Display diagonalDiffers	55.9 cm (22")	59.9 cm (23.6")
Display resolutionDiffers	1680 x 1050 pixels	1920 x 1080 pixels
Native aspect ratioDiffers	16:10	16:9
Touchscreen	No	No
Display brightness (typical)Differs	250 cd/m²	300 cd/m²
Response time	5 ms	5 ms
Supported graphics resolutionsDiffers	640 x 350, 832 x 624, 1024 x 768 (XGA), 1152 x 864 (XGA+), 1280 x 1024 (SXGA), 1440 x 900 (WXGA+), 1680 x 1050 (WSXGA+), 1920 x 1080 (HD 1080), 640 x 480 (VGA), 800 x 600 (SVGA)	1920 x 1080 (HD 1080)
Aspect ratioDiffers	16:10	16:9
Contrast ratio (typical)	1000:1	1000:1
Contrast ratio (dynamic)	10000000:1	10000000:1
Viewing angle, horizontal	170°	170°
Viewing angle, vertical	160°	160°
Display number of colours	16.78 million colours	16.78 million colours
Pixel pitchDiffers	0.282 x 0.282 mm	0.2715 x 0.2715 mm
Viewable size, horizontalKnown for one	47.4 cm	Unknown — not stated by the source
Viewable size, verticalKnown for one	29.6 cm	Unknown — not stated by the source
Viewable size diagonalDiffers	55.8 cm	59.8 cm
Separate H/V syncKnown for one	Yes	Unknown — not stated by the source
HD typeKnown for one	Unknown — not stated by the source	Full HD
Backlight typeKnown for one	Unknown — not stated by the source	W-LED
Supported video modesKnown for one	Unknown — not stated by the source	1080p
3DKnown for one	Unknown — not stated by the source	No
Performance1 differ
Windows operating systems supportedDiffers	Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows Vista Business, Windows Vista Business x64, Windows Vista Home Basic, Windows Vista Home Basic x64, Wi	Yes
Multimediaidentical
Built-in speaker(s)Known for one	No	Unknown — not stated by the source
Built-in camera	No	No
Designidentical
Market positioning	Business	Business
Product colour	Black	Black
Ports & interfacesidentical
USB hub version	2.0	2.0
USB Type-A downstream ports quantity	4	4
VGA (D-Sub) ports quantity	1	1
DVI-D ports quantity	0	0
DVI-I ports quantity	0	0
HDMI	Yes	Yes
HDMI ports quantity	1	1
HDCP	Yes	Yes
AC (power) in	Yes	Yes
Ergonomicsidentical
VESA mounting	Yes	Yes
Panel mounting interface	100 x 100 mm	100 x 100 mm
Cable lock slot	Yes	Yes
Cable lock slot type	Kensington	Kensington
Tilt angle rangeKnown for one	-5 - 20°	Unknown — not stated by the source
On Screen Display (OSD)	Yes	Yes
Number of OSD languagesKnown for one	8	Unknown — not stated by the source
LED indicators	Power	Power
Plug and PlayKnown for one	Unknown — not stated by the source	Yes
Power1 differ
Power consumption (typical)Differs	25 W	30 W
AC input voltage	100 - 240 V	100 - 240 V
AC input frequency	50 - 60 Hz	50 - 60 Hz
Operational conditionsidentical
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Storage temperature (T-T)Known for one	-20 - 60 °C	Unknown — not stated by the source
Operating relative humidity (H-H)	8 - 80%	8 - 80%
Storage relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Operating altitudeKnown for one	0 - 2438 m	Unknown — not stated by the source
Weight & dimensionsidentical
Width (without stand)	572 mm	572 mm
Depth (without stand)	179.8 mm	179.8 mm
Height (without stand)	415 mm	415 mm
Weight (without stand)	4.44 kg	4.44 kg
Bezel width (side)Known for one	2.44 cm	Unknown — not stated by the source
Packaging dataidentical
Package width	634 mm	634 mm
Package depth	150 mm	150 mm
Package height	492 mm	492 mm
Package weight	6.26 kg	6.26 kg
Packaging contentidentical
Quick start guide	Yes	Yes
Manual	Yes	Yes
Sustainabilityidentical
Sustainability certificates	ENERGY STAR	ENERGY STAR
Other features1 differ
TV tuner integrated	No	No
CertificationDiffers	ISO, FCC, TCO, RoHS	TCO 5.2
Dimensions (W x D x H) (imperial)Known for one	570 x 179.8 x 415 mm (22.4 x 7.08 x 16.3")	Unknown — not stated by the source
Box depth (imperial)Known for one	15 cm (5.9")	Unknown — not stated by the source
Box height (imperial)Known for one	49.2 cm (19.4")	Unknown — not stated by the source
Programmable eventsKnown for one	Unknown — not stated by the source	20
Ethernet LAN (RJ-45) portsKnown for one	Unknown — not stated by the source	0
Compliance industry standardsKnown for one	Unknown — not stated by the source	HDMI 1.3
Supplied AC adapter typeKnown for one	Unknown — not stated by the source	LED
Thin Clientidentical
Thin client installed	No	No
Networkidentical
Ethernet LANKnown for one	Unknown — not stated by the source	No

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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