Product comparison · 2 keyboards

Lenovo 55Y9020 keyboard USB Black vs Lenovo 57Y6473 keyboard RF Wireless Black

Key differences

Connectivity technology
- 55Y9020 keyboard USB Black:Wired
- 57Y6473 keyboard RF Wireless Black:Wireless
Device interface
- 55Y9020 keyboard USB Black:USB
- 57Y6473 keyboard RF Wireless Black:RF Wireless
Keyboard dimensions (WxDxH)
- 55Y9020 keyboard USB Black:313 x 220 x 19 mm
- 57Y6473 keyboard RF Wireless Black:135 x 126 x 27 mm
Keyboard weight
- 55Y9020 keyboard USB Black:460 g
- 57Y6473 keyboard RF Wireless Black:126 g

Differences highlightedShow differences only

Comparison of 55Y9020, 57Y6473
15 specifications	A Lenovo 55Y9020 keyboard USB Black Model 55Y9020 View product	B Lenovo 57Y6473 keyboard RF Wireless Black Model 57Y6473 View product
Keyboard2 differ
Connectivity technologyDiffers	Wired	Wireless
Device interfaceDiffers	USB	RF Wireless
Frequency bandKnown for one	Unknown — not stated by the source	2.4 GHz
Designidentical
Product colour	Black	Black
Featuresidentical
Cable lengthKnown for one	1.2 m	Unknown — not stated by the source
Wireless rangeKnown for one	Unknown — not stated by the source	10 m
Mouseidentical
Mouse included	No	No
System requirementsidentical
Mac operating systems supported	No	No
Weight & dimensions2 differ
Keyboard dimensions (WxDxH)Differs	313 x 220 x 19 mm	135 x 126 x 27 mm
Keyboard weightDiffers	460 g	126 g
Other featuresidentical
DepthKnown for one	0.75 in	Unknown — not stated by the source
HeightKnown for one	12 in	Unknown — not stated by the source
WidthKnown for one	8.67 in	Unknown — not stated by the source
Compatible operating systemsKnown for one	Unknown — not stated by the source	Windows 2000, Windows XP, Windows Vista, Windows 7
Poweridentical
Battery typeKnown for one	Unknown — not stated by the source	AAA

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.