Zyxel 661HW-D3 wireless router vs Zyxel 662HW-D3 wireless router

Comparison of 661HW-D3, 662HW-D3

14 specifications	A Zyxel 661HW-D3 wireless router Model 661HW-D3 View product	B Zyxel 662HW-D3 wireless router Model 662HW-D3 View product
Networkidentical
Supports ISDN connection	Yes	Yes
DSL featuresidentical
ADSL	Yes	Yes
DSL specification	G.992.1 Annex B	G.992.1 Annex B
Ports & interfacesidentical
Ethernet LAN (RJ-45) portsKnown for one	—Unknown — not stated by the source	4
Protocols1 differ
Supported network protocolsDiffers	IEEE 802.1d Transparent Bridging, 802.1q Pass-through Bridge, IP Routing: TCP, UDP, ICMP, ARP, RIPv1 & RIPv2, Static Route,IP Multicast IGMP v1/v2, IP Policy Route	IEEE 802.1d, 802.1q, TCP, UDP, ICMP, ARP, RIPv1 & RIPv2, Static Route,IP Multicast IGMP v1/v2, IP Policy Route
Operational conditionsidentical
Operating relative humidity (H-H)	20 - 95%	20 - 95%
Operating temperature (T-T)	0 - 50 °C	0 - 50 °C
Weight & dimensionsidentical
Weight	360 g	360 g
Other features2 differ
Dimensions (WxDxH)Differs	178 x 125 x 36 mm	180 x 128 x 36 mm
Management platform	Web-based	Web-based
Maximum data transfer rate	0.1 Gbit/s	0.1 Gbit/s
Networking features	Ethernet LAN, ADSL	Ethernet LAN, ADSL
xDSL connection	Yes	Yes
I/O portsDiffers	4x 10/100 Ethernet (RJ-45) 1x ADSL (RJ-45)	1x ADSL (RJ-45)

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.