Product comparison · 2 modems

Zyxel P971M modem vs Zyxel U-90E ZyXEL 56K Data/Fax Modem

Key differences

Operating temperature (T-T)
- P971M modem:5 - 50 °C
- U-90E ZyXEL 56K Data/Fax Modem:0 - 40 °C
Operating relative humidity (H-H)
- P971M modem:10 - 90%
- U-90E ZyXEL 56K Data/Fax Modem:5 - 90%

Differences highlightedShow differences only

Comparison of P971M, U-90E ZyXEL 56K Data/Fax Modem
14 specifications	A Zyxel P971M modem Model P971M View product	B Zyxel U-90E ZyXEL 56K Data/Fax Modem View product
Modemidentical
Modem speedKnown for one	Unknown — not stated by the source	56 Kbit/s
Performanceidentical
Data link protocolsKnown for one	Unknown — not stated by the source	V.21/Bell, V.22/Bell, V.22bis, V.23, V.32, V.34, V.90
Maximum fax transfer rateKnown for one	Unknown — not stated by the source	14.4 Kbps
Downstream data rateKnown for one	38 Mbit/s	Unknown — not stated by the source
Ports & interfacesidentical
Modem (RJ-11) portsKnown for one	Unknown — not stated by the source	2
RS-232 portsKnown for one	Unknown — not stated by the source	1
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 conditions2 differ
Operating temperature (T-T)Differs	5 - 50 °C	0 - 40 °C
Operating relative humidity (H-H)Differs	10 - 90%	5 - 90%
Poweridentical
USB poweredKnown for one	Yes	Unknown — not stated by the source
Weight & dimensionsidentical
DepthKnown for one	125 mm	Unknown — not stated by the source
HeightKnown for one	30 mm	Unknown — not stated by the source
WidthKnown for one	180 mm	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.