HP 911725-251 keyboard Office USB QWERTY Russian Black vs HP L21478-L31 keyboard Office USB Black

Comparison of 911725-251, L21478-L31

21 specifications	A HP 911725-251 keyboard Office USB QWERTY Russian Black Model 911725-251 View product	B HP L21478-L31 keyboard Office USB Black Model L21478-L31 View product
Keyboardidentical
Keyboard layoutKnown for one	QWERTY	—Unknown — not stated by the source
Keyboard languageKnown for one	Russian	—Unknown — not stated by the source
Pointing deviceKnown for one	—Unknown — not stated by the source	No
Designidentical
BacklightKnown for one	No	—Unknown — not stated by the source
Surface colorationKnown for one	—Unknown — not stated by the source	Monochromatic
Featuresidentical
Cable lengthKnown for one	1.8 m	—Unknown — not stated by the source
System requirementsidentical
Windows operating systems supportedKnown for one	Windows 10 Home, Windows 10 Pro, Windows 7 Professional, Windows 8, Windows 8 Enterprise, Windows 8 Pro, Windows 8.1, Windows 8.1 Enterprise, Windows 8.1 Pro	—Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	10 - 50 °C	—Unknown — not stated by the source
Weight & dimensionsidentical
Keyboard dimensions (WxDxH)Known for one	440.6 x 144.5 x 18.9 mm	—Unknown — not stated by the source
Keyboard weightKnown for one	600 g	—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.