Product comparison · 2 modems

D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router vs Zyxel P-871M modem

14specifications compared
12differ
2identical
13known for one product only

Key differences

The Zyxel P-871M modem has 36.5 Mbit/s more upstream data rate than the D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router (40 Mbit/s vs 3.5 Mbit/s). The Zyxel P-871M modem has 56 Mbit/s more downstream data rate than the D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router (80 Mbit/s vs 24 Mbit/s). The D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router has 3 more Ethernet LAN (RJ-45) ports than the Zyxel P-871M modem (4 vs 1). Connectivity LEDs: DSL, LAN, Internet on the D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router, Yes on the Zyxel P-871M modem. Operating relative humidity (H-H): 5 - 95% on the D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router, 20 - 85% on the Zyxel P-871M modem.

Upstream data rate
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:3.5 Mbit/s
- P-871M modem:40 Mbit/s
Downstream data rate
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:24 Mbit/s
- P-871M modem:80 Mbit/s
Connectivity LEDs
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:DSL, LAN, Internet
- P-871M modem:Yes
Ethernet LAN (RJ-45) ports
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:4
- P-871M modem:1
Operating relative humidity (H-H)
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:5 - 95%
- P-871M modem:20 - 85%
Storage temperature (T-T)
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:-20 - 65 °C
- P-871M modem:-20 - 60 °C
Depth
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:150 mm
- P-871M modem:132 mm
Height
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:33 mm
- P-871M modem:40 mm

Side by side

Differences highlightedShow differences only

Comparison of DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router, P-871M
27 specifications	A D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router View product	B Zyxel P-871M modem Model P-871M View product
Performance2 differ
Upstream data rateDiffers	3.5 Mbit/s	40 Mbit/s
Downstream data rateDiffers	24 Mbit/s	80 Mbit/s
Networking featuresKnown for one	Unknown — not stated by the source	Ethernet, Fast Ethernet, VDSL1/2
Supported protocolsKnown for one	Unknown — not stated by the source	1 x WAN (RJ45)
Features1 differ
Flow control supportKnown for one	Unknown — not stated by the source	Yes
InternalKnown for one	Unknown — not stated by the source	No
LED indicatorsKnown for one	Unknown — not stated by the source	Yes
Connectivity LEDsDiffers	DSL, LAN, Internet	Yes
Ports & interfaces1 differ
Ethernet LAN (RJ-45) portsDiffers	4	1
Modem (RJ-11) portsKnown for one	1	Unknown — not stated by the source
Poweridentical
USB poweredKnown for one	Unknown — not stated by the source	No
Certificates2 differ
Compliance certificatesKnown for one	Unknown — not stated by the source	Federal Communications Commission (FCC)
CertificationDiffers	7.6” x 5.9” x 1.3 10.8” x 8.2” x 2.7	EN55022 Class B, EN61000-3-2: 2000, EN61000-3-3: 1995+A1:2001, FCC Part 15 (Class B), CSA 60950-1, UL 60950-1, EN 60950-1:2001+A11, IEC 60950-1:2001
Compliance industry standardsDiffers	TR-067, TR-069	IEEE 802.3, IEEE 802.3u, IEEE 802.3x, IEEE 802.1D
Operational conditions2 differ
Operating relative humidity (H-H)Differs	5 - 95%	20 - 85%
Storage temperature (T-T)Differs	-20 - 65 °C	-20 - 60 °C
Non-operating relative humidity (non-condensing)Known for one	Unknown — not stated by the source	20 - 90%
Weight & dimensions4 differ
DepthDiffers	150 mm	132 mm
HeightDiffers	33 mm	40 mm
WeightDiffers	318 g	307 g
WidthDiffers	193 mm	189 mm
Modemidentical
Modem typeKnown for one	ADSL2, ADSL2+	Unknown — not stated by the source
InterfaceKnown for one	ADSL2, ADSL2+	Unknown — not stated by the source
Packaging dataidentical
Package dimensions (WxDxH)Known for one	274 x 208 x 69 mm	Unknown — not stated by the source
Package weightKnown for one	953 g	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.

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