Product comparison · 2 monitors

Lenovo ThinkVision LS2251 computer monitor vs Lenovo Flat Panel Essential LT1421 computer monitor

41specifications compared
29differ
12identical
41known for one product only

Key differences

Display diagonal
- ThinkVision LS2251 computer monitor:55.9 cm (22")
- Flat Panel Essential LT1421 computer monitor:35.6 cm (14")
Display resolution
- ThinkVision LS2251 computer monitor:1680 x 1050 pixels
- Flat Panel Essential LT1421 computer monitor:1366 x 768 pixels
Native aspect ratio
- ThinkVision LS2251 computer monitor:16:10
- Flat Panel Essential LT1421 computer monitor:16:9
Display brightness (typical)
- ThinkVision LS2251 computer monitor:250 cd/m²
- Flat Panel Essential LT1421 computer monitor:200 cd/m²
Response time
- ThinkVision LS2251 computer monitor:5 ms
- Flat Panel Essential LT1421 computer monitor:8 ms
Aspect ratio
- ThinkVision LS2251 computer monitor:16:10
- Flat Panel Essential LT1421 computer monitor:16:9
Contrast ratio (typical)
- ThinkVision LS2251 computer monitor:1000:1
- Flat Panel Essential LT1421 computer monitor:400:1
Viewing angle, horizontal
- ThinkVision LS2251 computer monitor:170°
- Flat Panel Essential LT1421 computer monitor:90°

Side by side

Differences highlightedShow differences only

Comparison of LS2251, LT1421
82 specifications	A Lenovo ThinkVision LS2251 computer monitor Model LS2251 View product	B Lenovo Flat Panel Essential LT1421 computer monitor Model LT1421 View product
Display14 differ
Display diagonalDiffers	55.9 cm (22")	35.6 cm (14")
Display resolutionDiffers	1680 x 1050 pixels	1366 x 768 pixels
Native aspect ratioDiffers	16:10	16:9
Touchscreen	No	No
Display brightness (typical)Differs	250 cd/m²	200 cd/m²
Response timeDiffers	5 ms	8 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)	1366 x 768
Aspect ratioDiffers	16:10	16:9
Contrast ratio (typical)Differs	1000:1	400:1
Contrast ratio (dynamic)Known for one	10000000:1	Unknown — not stated by the source
Viewing angle, horizontalDiffers	170°	90°
Viewing angle, verticalDiffers	160°	50°
Display number of coloursKnown for one	16.78 million colours	Unknown — not stated by the source
Pixel pitchDiffers	0.282 x 0.282 mm	0.227 x 0.227 mm
Viewable size, horizontalDiffers	47.4 cm	31 cm
Viewable size, verticalDiffers	29.6 cm	17.4 cm
Viewable size diagonalDiffers	55.8 cm	35.6 cm
Separate H/V syncKnown for one	Yes	Unknown — not stated by the source
Display technologyKnown for one	Unknown — not stated by the source	LED
HD typeKnown for one	Unknown — not stated by the source	HD
Panel typeKnown for one	Unknown — not stated by the source	TN+Film
Backlight typeKnown for one	Unknown — not stated by the source	W-LED
Supported video modesKnown for one	Unknown — not stated by the source	720p
Sync-on-green (SOG)Known for one	Unknown — not stated by the source	No
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 & interfaces2 differ
USB hub version	2.0	2.0
USB Type-A downstream ports quantityDiffers	4	1
VGA (D-Sub) ports quantityKnown for one	1	Unknown — not stated by the source
DVI-D ports quantityKnown for one	0	Unknown — not stated by the source
DVI-I ports quantityKnown for one	0	Unknown — not stated by the source
HDMIKnown for one	Yes	Unknown — not stated by the source
HDMI ports quantityKnown for one	1	Unknown — not stated by the source
HDCPKnown for one	Yes	Unknown — not stated by the source
AC (power) inDiffers	Yes	No
Ergonomics3 differ
VESA mountingKnown for one	Yes	Unknown — not stated by the source
Panel mounting interfaceDiffers	100 x 100 mm	No
Cable lock slot	Yes	Yes
Cable lock slot type	Kensington	Kensington
Tilt angle rangeDiffers	-5 - 20°	12 - 40°
On Screen Display (OSD)Differs	Yes	No
Number of OSD languagesKnown for one	8	Unknown — not stated by the source
LED indicatorsKnown for one	Power	Unknown — not stated by the source
PivotKnown for one	Unknown — not stated by the source	No
Plug and PlayKnown for one	Unknown — not stated by the source	Yes
Power1 differ
Power consumption (typical)Differs	25 W	4.2 W
AC input voltageKnown for one	100 - 240 V	Unknown — not stated by the source
AC input frequencyKnown for one	50 - 60 Hz	Unknown — not stated by the source
Power consumption (max)Known for one	Unknown — not stated by the source	5 W
Operational conditions2 differ
Operating temperature (T-T)Differs	0 - 40 °C	5 - 35 °C
Storage temperature (T-T)Known for one	-20 - 60 °C	Unknown — not stated by the source
Operating relative humidity (H-H)Differs	8 - 80%	20 - 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 & dimensions5 differ
Width (without stand)Differs	572 mm	335 mm
Depth (without stand)Differs	179.8 mm	21.5 mm
Height (without stand)Differs	415 mm	217 mm
Weight (without stand)Differs	4.44 kg	870 g
Bezel width (side)Differs	2.44 cm	1.21 cm
Packaging dataidentical
Package widthKnown for one	634 mm	Unknown — not stated by the source
Package depthKnown for one	150 mm	Unknown — not stated by the source
Package heightKnown for one	492 mm	Unknown — not stated by the source
Package weightKnown for one	6.26 kg	Unknown — not stated by the source
Quantity per packKnown for one	Unknown — not stated by the source	1 pc(s)
Packaging contentidentical
Quick start guide	Yes	Yes
Manual	Yes	Yes
Cables includedKnown for one	Unknown — not stated by the source	USB
Sustainabilityidentical
Sustainability certificates	ENERGY STAR	ENERGY STAR
Other features1 differ
TV tuner integrated	No	No
CertificationDiffers	ISO, FCC, TCO, RoHS	EPEAT Gold
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
SafetyKnown for one	Unknown — not stated by the source	RoHS
Supplied AC adapter typeKnown for one	Unknown — not stated by the source	LED
Thin Clientidentical
Thin client installed	No	No
Networkidentical
BluetoothKnown for one	Unknown — not stated by the source	No
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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