Zyxel P-660R wired router Black vs Zyxel P-660R-I wired router Black

Comparison of P-660R, P-660R-I

30 specifications	A Zyxel P-660R wired router Black Model P-660R View product	B Zyxel P-660R-I wired router Black Model P-660R-I View product
WAN connectionidentical
Ethernet WAN	Yes	Yes
DSL WAN	Yes	Yes
Networkidentical
Networking standards	IEEE 802.1D	IEEE 802.1D
Ethernet LAN	Yes	Yes
Number of users	1 user(s)	1 user(s)
Wireless LAN featuresidentical
Dual-band	No	No
DSL featuresidentical
ADSL2+	Yes	Yes
Management featuresidentical
Web-based management	Yes	Yes
Ports & interfacesidentical
Ethernet LAN (RJ-45) ports	1	1
RJ-11 ports quantity	1	1
DC-in jack	Yes	Yes
Protocolsidentical
DHCP client	Yes	Yes
DHCP server	Yes	Yes
Routing protocols	RIP-1, RIP-2	RIP-1, RIP-2
Supported network protocols	TCP/UDP, ICMP , IGMP	TCP/UDP, ICMP , IGMP
Securityidentical
Firewall	Yes	Yes
DoS attack prevention	Yes	Yes
Featuresidentical
Certification	FCC, CE	FCC, CE
Designidentical
Product colour	Black	Black
Rack mounting	No	No
LED indicators	DSL, LAN, Power	DSL, LAN, Power
On/off switch	Yes	Yes
Operational conditionsidentical
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Storage temperature (T-T)	-20 - 60 °C	-20 - 60 °C
Operating relative humidity (H-H)	20 - 85%	20 - 85%
Storage relative humidity (H-H)	20 - 90%	20 - 90%
Weight & dimensionsidentical
Width	110 mm	110 mm
Depth	107 mm	107 mm
Height	36 mm	36 mm
Weight	165 g	165 g

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.