Product comparison · 2 kvm switches

ATEN US221A-A7 KVM switch Black, Grey vs ATEN US421A-A7 KVM switch Black, Grey

Key differences

Number of computers controlled
- US221A-A7 KVM switch Black, Grey:2
- US421A-A7 KVM switch Black, Grey:4
Weight
- US221A-A7 KVM switch Black, Grey:54 g
- US421A-A7 KVM switch Black, Grey:97 g

Differences highlightedShow differences only

Comparison of US221A-A7, US421A-A7
19 specifications	A ATEN US221A-A7 KVM switch Black, Grey Model US221A-A7 View product	B ATEN US421A-A7 KVM switch Black, Grey Model US421A-A7 View product
Ports & interfaces1 differ
Number of computers controlledDiffers	2	4
Keyboard port type	USB	USB
Mouse port type	USB	USB
USB 2.0 ports quantityKnown for one	3	Unknown — not stated by the source
Designidentical
Rack mounting	No	No
Product colour	Black, Grey	Black, Grey
Cable length	1.8 m	1.8 m
Displayidentical
Built-in display	No	No
Sustainabilityidentical
Compliance certificates	RoHS	RoHS
Operational conditionsidentical
Operating temperature (T-T)	5 - 40 °C	5 - 40 °C
Storage temperature (T-T)	-20 - 60 °C	-20 - 60 °C
Operating relative humidity (H-H)	0 - 80%	0 - 80%
Weight & dimensions1 differ
WidthKnown for one	Unknown — not stated by the source	76 mm
DepthKnown for one	Unknown — not stated by the source	102 mm
HeightKnown for one	Unknown — not stated by the source	23 mm
WeightDiffers	54 g	97 g
Packaging contentidentical
Cables includedKnown for one	Unknown — not stated by the source	USB
ManualKnown for one	Unknown — not stated by the source	Yes
Other featuresidentical
I/O portsKnown for one	Unknown — not stated by the source	4 x USB Type B Out 1 x USB Type A In

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.