Product comparison · 2 keyboards

KeySonic KSK-3205 RFM vs Lenovo 40K9439 keyboard Universal PS/2 Danish Black

11specifications compared
8differ
3identical
19known for one product only

Key differences

Connectivity technology
- KSK-3205 RFM:Wireless
- 40K9439 keyboard Universal PS/2 Danish Black:Wired
Device interface
- KSK-3205 RFM:RF Wireless
- 40K9439 keyboard Universal PS/2 Danish Black:PS/2
Keyboard form factor
- KSK-3205 RFM:Mini
- 40K9439 keyboard Universal PS/2 Danish Black:Full-size (100%)
Keyboard number of keys
- KSK-3205 RFM:49
- 40K9439 keyboard Universal PS/2 Danish Black:104
Backlight
- KSK-3205 RFM:Yes
- 40K9439 keyboard Universal PS/2 Danish Black:No
Wrist rest
- KSK-3205 RFM:No
- 40K9439 keyboard Universal PS/2 Danish Black:Yes
Power source type
- KSK-3205 RFM:Battery
- 40K9439 keyboard Universal PS/2 Danish Black:PS/2
Keyboard dimensions (WxDxH)
- KSK-3205 RFM:110 x 67 x 16.2 mm
- 40K9439 keyboard Universal PS/2 Danish Black:453 x 185 x 34 mm

Side by side

Differences highlightedShow differences only

Comparison of KSK-3205 RFM, 40K9439
30 specifications	A KeySonic KSK-3205 RFM View product	B Lenovo 40K9439 keyboard Universal PS/2 Danish Black Model 40K9439 View product
Keyboard4 differ
Recommended usageKnown for one	Unknown — not stated by the source	Universal
Connectivity technologyDiffers	Wireless	Wired
Device interfaceDiffers	RF Wireless	PS/2
Keyboard languageKnown for one	Unknown — not stated by the source	Danish
Pointing deviceKnown for one	Unknown — not stated by the source	No
Keyboard form factorDiffers	Mini	Full-size (100%)
Numeric keypadKnown for one	Unknown — not stated by the source	Yes
Keyboard number of keysDiffers	49	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
PurposeKnown for one	PC/Server	Unknown — not stated by the source
Frequency bandKnown for one	2.4 GHz	Unknown — not stated by the source
Design2 differ
BacklightDiffers	Yes	No
Wrist restDiffers	No	Yes
LED indicatorsKnown for one	Unknown — not stated by the source	Yes
Featuresidentical
Cable lengthKnown for one	Unknown — not stated by the source	2 m
Wireless rangeKnown for one	7 m	Unknown — not stated by the source
Power1 differ
Power source typeDiffers	Battery	PS/2
Battery typeKnown for one	AA	Unknown — not stated by the source
Number of batteries supportedKnown for one	2	Unknown — not stated by the source
System requirementsidentical
Mac operating systems supportedKnown for one	Yes	Unknown — not stated by the source
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 & dimensions1 differ
Keyboard dimensions (WxDxH)Differs	110 x 67 x 16.2 mm	453 x 185 x 34 mm
Keyboard weightKnown for one	66 g	Unknown — not stated by the source
Packaging contentidentical
Number of products includedKnown for one	Unknown — not stated by the source	1 pc(s)
Mouseidentical
Mouse includedKnown 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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