Ewent EC1645 audio card USB vs Ewent EW3761 audio card 4.0 channels USB

Comparison of EC1645, EW3761

16 specifications	A Ewent EC1645 audio card USB Model EC1645 View product	B Ewent EW3761 audio card 4.0 channels USB Model EW3761 View product
Audioidentical
Internal	No	No
Audio output channelsKnown for one	—Unknown — not stated by the source	4.0 channels
Ports & interfacesidentical
Host interface	USB	USB
Headphone connectivityKnown for one	3.5 mm	—Unknown — not stated by the source
Headphone outputsKnown for one	1	—Unknown — not stated by the source
Microphone inKnown for one	Yes	—Unknown — not stated by the source
Featuresidentical
ChipsetKnown for one	—Unknown — not stated by the source	C-Media CM108
LED indicatorsKnown for one	—Unknown — not stated by the source	Status
Cable lengthKnown for one	0.15 m	—Unknown — not stated by the source
Softwareidentical
Windows operating systems supportedKnown for one	—Unknown — not stated by the source	Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 8 Ente
Mac operating systems supportedKnown for one	—Unknown — not stated by the source	Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks
Weight & dimensionsidentical
WeightKnown for one	—Unknown — not stated by the source	18 g
DepthKnown for one	—Unknown — not stated by the source	61 mm
WidthKnown for one	—Unknown — not stated by the source	53 mm
HeightKnown for one	—Unknown — not stated by the source	12 mm
Other featuresidentical
Server operating systems supportedKnown for one	—Unknown — not stated by the source	Windows Server 2003, Windows Server 2003 x64, Windows Server 2008, Windows Server 2008 x64

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.