
Motorola
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The Motorola ARRIS SURFboard SB5101U is a DOCSIS 2.0 cable modem offering up to 38 Mbps downstream and 30 Mbps upstream. It features a compact design, Ethernet and USB connectivity, ENERGY STAR efficiency, and diagnostic LEDs for easy setup and monitoring.
Pros
Current
$65.00
Average
$60.52
Lowest
$49.00
Highest
$66.00
Lower = better sales rank
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Cons
From Expert Reviews
Praised by Experts
Criticized by Experts
Expert Opinion
Professional reviewers consider the SB5101U a reliable, easy‑to‑install DOCSIS 2.0 modem suitable for legacy broadband plans, but they caution that its speed ceiling and single 10/100 Mbps Ethernet port make it inadequate for today’s high‑speed internet demands. Editors from Cox explicitly advise users to move to DOCSIS 3.1 hardware for any plan exceeding 25 Mbps.
How It Compares
vs. DOCSIS 3.0/3.1 modem (generic)
Advantages
Disadvantages
Choose the SB5101U for inexpensive, low‑speed legacy connections; upgrade to a DOCSIS 3.0/3.1 modem when you need gigabit speeds or multiple high‑throughput devices.