Product comparison · 2 keyboards

HP 511571-ZH1 keyboard Mouse included RF Wireless QWERTY English Black vs Lenovo 40K9439 keyboard Universal PS/2 Danish Black

9specifications compared
5differ
4identical
22known for one product only

Key differences

Connectivity technology
- 511571-ZH1 keyboard Mouse included RF Wireless QWERTY English Black:Wireless
- 40K9439 keyboard Universal PS/2 Danish Black:Wired
Device interface
- 511571-ZH1 keyboard Mouse included RF Wireless QWERTY English Black:RF Wireless
- 40K9439 keyboard Universal PS/2 Danish Black:PS/2
Keyboard language
- 511571-ZH1 keyboard Mouse included RF Wireless QWERTY English Black:English
- 40K9439 keyboard Universal PS/2 Danish Black:Danish
Wrist rest
- 511571-ZH1 keyboard Mouse included RF Wireless QWERTY English Black:No
- 40K9439 keyboard Universal PS/2 Danish Black:Yes
Power source type
- 511571-ZH1 keyboard Mouse included RF Wireless QWERTY English Black:Battery
- 40K9439 keyboard Universal PS/2 Danish Black:PS/2

Side by side

Differences highlightedShow differences only

Comparison of 511571-ZH1, 40K9439
31 specifications	A HP 511571-ZH1 keyboard Mouse included RF Wireless QWERTY English Black Model 511571-ZH1 View product	B Lenovo 40K9439 keyboard Universal PS/2 Danish Black Model 40K9439 View product
Keyboard3 differ
Recommended usageKnown for one	Unknown — not stated by the source	Universal
Connectivity technologyDiffers	Wireless	Wired
Device interfaceDiffers	RF Wireless	PS/2
Keyboard languageDiffers	English	Danish
Pointing deviceKnown for one	Unknown — not stated by the source	No
Keyboard form factor	Full-size (100%)	Full-size (100%)
Numeric keypad	Yes	Yes
Keyboard number of keysKnown for one	Unknown — not stated by the source	104
Windows keysKnown for one	Unknown — not stated by the source	Yes
CertificationKnown for one	Unknown — not stated by the source	FCC Part 15, Class B, UL 1950 (E164844), CSA C22.2 #0950-M89 (LR94275), Canada ICES-003 Class B; Canada NMB-003, Class B), CE (IEC 950, IEC 801-2, Level 3), TUV-GS ZH1/618 (R9552884), VCCI, C-Tick, MOC, BSMI, MIC, NOM
Keyboard layoutKnown for one	QWERTY	Unknown — not stated by the source
PurposeKnown for one	Universal	Unknown — not stated by the source
Frequency bandKnown for one	2.4 GHz	Unknown — not stated by the source
Country of originKnown for one	China	Unknown — not stated by the source
Design1 differ
BacklightKnown for one	Unknown — not stated by the source	No
Keyboard style	Straight	Straight
Wrist restDiffers	No	Yes
Product colour	Black	Black
LED indicatorsKnown for one	Unknown — not stated by the source	Yes
Featuresidentical
Cable lengthKnown for one	Unknown — not stated by the source	2 m
Power1 differ
Power source typeDiffers	Battery	PS/2
System requirementsidentical
Windows operating systems supportedKnown for one	Unknown — not stated by the source	Yes
Operational conditionsidentical
Operating temperature (T-T)Known for one	Unknown — not stated by the source	10 - 40 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	8 - 80%
Weight & dimensionsidentical
Keyboard dimensions (WxDxH)Known for one	Unknown — not stated by the source	453 x 185 x 34 mm
Packaging contentidentical
Number of products includedKnown for one	Unknown — not stated by the source	1 pc(s)
Wireless receiver interfaceKnown for one	USB Type-A	Unknown — not stated by the source
Mouseidentical
Mouse includedKnown for one	Yes	Unknown — not stated by the source
ScrollKnown for one	Yes	Unknown — not stated by the source
Scroll typeKnown for one	Wheel	Unknown — not stated by the source
Other featuresidentical
InternalKnown for one	No	Unknown — not stated by the source

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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