Product comparison · 2 modems

D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router vs Motorola SB6121 modem

10specifications compared
7differ
3identical
18known for one product only

Key differences

The Motorola SB6121 modem has 127.572 Mbit/s more upstream data rate than the D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router (131.072 Mbit/s vs 3.5 Mbit/s). The Motorola SB6121 modem has 198.464 Mbit/s more downstream data rate than the D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router (222.464 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 Motorola SB6121 modem (4 vs 1). Storage temperature (T-T): -20 - 65 °C on the D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router, -30 - 70 °C on the Motorola SB6121 modem.

Upstream data rate
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:3.5 Mbit/s
- SB6121 modem:131.072 Mbit/s
Downstream data rate
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:24 Mbit/s
- SB6121 modem:222.464 Mbit/s
Ethernet LAN (RJ-45) ports
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:4
- SB6121 modem:1
Storage temperature (T-T)
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:-20 - 65 °C
- SB6121 modem:-30 - 70 °C
Depth
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:150 mm
- SB6121 modem:133 mm
Height
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:33 mm
- SB6121 modem:42 mm
Width
- DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router:193 mm
- SB6121 modem:133 mm

Side by side

Differences highlightedShow differences only

Comparison of DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router, SB6121
28 specifications	A D-Link DSL-2540B ADSL2/2+ Modem with 4-Port Ethernet Router View product	B Motorola SB6121 modem Model SB6121 View product
Modemidentical
Modem typeKnown for one	ADSL2, ADSL2+	Unknown — not stated by the source
InterfaceKnown for one	ADSL2, ADSL2+	Unknown — not stated by the source
Performance2 differ
Upstream data rateDiffers	3.5 Mbit/s	131.072 Mbit/s
Downstream data rateDiffers	24 Mbit/s	222.464 Mbit/s
Data link protocolsKnown for one	Unknown — not stated by the source	TCP/IP
Maximum data transfer rateKnown for one	Unknown — not stated by the source	222.464 Mbit/s
ModulationKnown for one	Unknown — not stated by the source	256-QAM, 64-QAM, QPSK
Featuresidentical
Connectivity LEDsKnown for one	DSL, LAN, Internet	Unknown — not stated by the source
BandwidthKnown for one	Unknown — not stated by the source	0.1 GHz
Frequency rangeKnown for one	Unknown — not stated by the source	0.108 - 1 GHz
Ports & interfaces1 differ
DC-in jack	Yes	Yes
Ethernet LAN (RJ-45) portsDiffers	4	1
Modem (RJ-11) portsKnown for one	1	Unknown — not stated by the source
Certificatesidentical
CertificationKnown for one	7.6” x 5.9” x 1.3 10.8” x 8.2” x 2.7	Unknown — not stated by the source
Compliance industry standardsKnown for one	TR-067, TR-069	Unknown — not stated by the source
Operational conditions1 differ
Operating temperature (T-T)	0 - 40 °C	0 - 40 °C
Operating relative humidity (H-H)	5 - 95%	5 - 95%
Storage temperature (T-T)Differs	-20 - 65 °C	-30 - 70 °C
Weight & dimensions3 differ
DepthDiffers	150 mm	133 mm
HeightDiffers	33 mm	42 mm
WeightKnown for one	318 g	Unknown — not stated by the source
WidthDiffers	193 mm	133 mm
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
Poweridentical
Power requirementsKnown for one	Unknown — not stated by the source	(105 - 125)VAC, 60Hz/(100 - 240)VAC, (50 - 60)Hz
Power supply typeKnown for one	Unknown — not stated by the source	9W
System requirementsidentical
Mac compatibilityKnown for one	Unknown — not stated by the source	Yes
Packaging contentidentical
Cables includedKnown for one	Unknown — not stated by the source	LAN (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.

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