Zyxel Omni 56K COM Plus vs Zyxel U-90E - 56K Data/Fax Modem

Comparison of Omni 56K COM Plus, U-90E - 56K Data/Fax Modem

15 specifications	A Zyxel Omni 56K COM PlusView product	B Zyxel U-90E - 56K Data/Fax ModemView product
Modemidentical
InterfaceKnown for one	COM	—Unknown — not stated by the source
Form factorKnown for one	—Unknown — not stated by the source	Desktop
Performance2 differ
Data link protocolsDiffers	V.44/V.42/MNP 3-4, V.42bis/MNP 5	V.21/Bell, V.22/Bell, V.22bis, V.23, V.32, V.34, V.90
Upstream data rateKnown for one	0.048 Mbit/s	—Unknown — not stated by the source
Downstream data rateKnown for one	0.056 Mbit/s	—Unknown — not stated by the source
Maximum fax transfer rateDiffers	7.2 - 14.4 Kbps	14.4 Kbps
Featuresidentical
InternalKnown for one	No	—Unknown — not stated by the source
Plug and PlayKnown for one	Yes	—Unknown — not stated by the source
Poweridentical
USB poweredKnown for one	No	—Unknown — not stated by the source
Ports & interfacesidentical
I/O portsKnown for one	—Unknown — not stated by the source	1x Phone RJ-11 1x Line RJ-11 1x RS-232
System requirementsidentical
Mac compatibilityKnown for one	—Unknown — not stated by the source	Yes
Compatible operating systemsKnown for one	—Unknown — not stated by the source	DOS Windows 95/98/NT Mac OS UNIX Novell Amiga IBM AS400/AS6000
Operational conditionsidentical
Operating temperature (T-T)Known for one	—Unknown — not stated by the source	0 - 40 °C
Operating relative humidity (H-H)Known for one	—Unknown — not stated by the source	5 - 90%

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.