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SURFboard
T25
SURFboard

T25

Best price now

$128.00at MercariChecked 11 h ago

Compared across 7 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Last seen at $128.00 used at Mercari on Nov 14.
  • Checked at 7 stores.

Our take on the T25

The SURFboard T25 is a DOCSIS 3.1 cable modem with built-in voice, certified for Xfinity Internet and Voice service. It handles plans up to 1 Gbps and has two Gigabit Ethernet ports plus two telephony ports for phone service. It suits Xfinity customers who want one box for internet and home phone and would rather skip the carrier's rental modem. Against DOCSIS 3.1 rivals, it is a modest, voice-focused unit: two LAN ports is fewer than many multi-port modems, and it works on Xfinity rather than on every cable provider.

Best forXfinity Internet and Voice subscribersHouseholds with a home phone linePlans up to 1 GbpsRenters who want to stop renting a modem
Pros
  • DOCSIS 3.1 with OFDM support for gigabit-tier plans
  • Built-in voice with two telephony ports for phone service
  • Two Gigabit Ethernet ports for wired devices
  • Compact and light at about 8 oz
  • Works with Xfinity Internet and Voice
Cons

T25 prices at every store

  • MercariPre-owned

    In stock

    $128.00+ $17.95 shippingChecked 11 h ago
    Visit Mercari
  • MercariPre-owned

    In stock

    $128.00+ $17.95 shippingChecked 11 h ago
    Visit Mercari
  • eBayPre-owned

    Out of stockSold by aokthrift

    $39.00Free shippingChecked 11 h ago
    Visit eBay
  • Simple Cell ShopPre-owned

    Out of stock

    $129.95Free shippingChecked 11 h ago
    Visit Simple Cell Shop
  • WalmartNew

    Out of stockSold by Tech Tech Store

    $129.99Checked 12 h ago
    Visit Walmart
  • Buyyourownmodem.comNew

    Out of stock

    $167.95+ $9.99 shippingChecked 11 h ago
    Visit Buyyourownmodem.com
  • Best BuyNew

    Out of stock

    $229.00Checked 12 h ago
    Visit Best Buy

Store links may earn us a commission.

T25 price history

Lowest price we've seen: $68.96 on Nov 15 at Buyyourownmodem.com; $129.99 now. Tracked across 3 stores since Nov 15.

From Mercari

  • ARRIS SURFboard T25 DOCSIS 3.1 Gigabit Cable Modem
  • Certified for Xfinity Internet & Voice
  • Black
  • For plans up to 1000 Mbps
  • Condition: Like new
Shipping
Ships from Missouri; estimated delivery Nov 17 - Nov 21.
Packs
Bundle discounts from this seller: 5% off 2+ items, 10% off 4+ items.

About the T25

The SURFboard T25 is a DOCSIS 3.1 cable modem with a built-in voice function.

It connects to a network over wired Ethernet through two 1-Gigabit ports. It also has two telephony ports and supports PacketCable specifications for voice over IP. The modem is backward compatible with DOCSIS 3.0.

Modem type
Cable modem, external enclosure
Standards
DOCSIS 3.1, DOCSIS 3.0, PacketCable 2.0, ITU T.38
Carrier
Xfinity
Max transfer rate
10 Gbps
Data transfer rate
1 Gbps
Ethernet ports
2 x 1000Base-T RJ-45
Telephony ports
2
Modulation
OFDM
Line coding
OFDM, 16 QAM, 64 QAM, OFDMA
Communications
Voice, Cable
VoIP protocols
PacketCable specifications
Connectivity
Wired

Questions and answers

Does the T25 work with providers other than Xfinity?
It is certified for Xfinity Internet and Voice. Other cable providers may not approve it, so check with yours before buying.
Do I need a separate router with this modem?
Yes. The T25 is a modem only, with no Wi-Fi. You connect a router to one of its Ethernet ports for wireless.
What internet speed does it support?
It is rated for plans up to 1000 Mbps and uses DOCSIS 3.1 with OFDM, so it fits gigabit-tier Xfinity plans.
Can I use it for a home phone?
Yes. It has two telephony ports and supports PacketCable, so it can carry Xfinity Voice phone service.
How many devices can I plug in directly?
Two, through its two Gigabit Ethernet ports. Anything else connects through a router or switch.
Is it a good upgrade over an older DOCSIS 3.0 modem?
If your plan is at or near gigabit, yes: DOCSIS 3.1 and OFDM support let it keep up where DOCSIS 3.0 modems cap out. On slower plans the gain is smaller.
Where is the T25 cheapest?
At Mercari, for $128.00, as of our latest check.

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Certified for Xfinity, not a fit for other cable providers
  • Two LAN ports is fewer than many rivals offer
  • No built-in Wi-Fi; you still need a router
  • Voice features only matter if you pay for Xfinity Voice
  • Width
    3.3 in
    Weight
    8.01 oz
    Color
    Black
    Country of origin
    China

    Specifications

    Maximum Transfer Rate
    10 Gbps
    Data Link Protocol
    Ethernet
    Data Transfer Rate
    1 Gbps
    Compliant Standards
    DOCSIS 3.1
    Modem Type
    Cable Modem
    Communications Type
    Voice, Cable
    Digital Signaling Protocol
    DOCSIS 3.1
    Modulation Technology
    OFDM
    Line Coding Format
    OFDM, 16 QAM, 64 QAM, OFDMA
    Carrier
    Xfinity
    Ethernet Ports
    2 x 1000Base-T - RJ-45
    Connectivity Technology
    Wired
    Interface
    Ethernet
    VOIP Protocols
    PacketCable specifications
    Number Of
    Two (1-Gigabit Ethernet ports), 2 (telephony ports), Two (telephony ports)
    Type
    Cable Modem
    Dimensions
    3.3 in (width)
    Enclosure Type
    External
    Weight
    8.01 oz
    Localization
    China (country of origin)
    Built-In Devices
    Cable modem
    Transmission Speed
    Gigabit+ data services, Gigabit speed capability
    Network Highlights
    LAN Support
    Protocol Specifications
    PacketCable 2.0, DOCSIS 3.0, DOCSIS 3.1, ITU T.38
    Where can I buy the T25?
    6 stores we checked sell it, including Mercari, Buyyourownmodem.com, eBay, Simple Cell Shop, Walmart.
    Netgear CM2050V DOCSIS 3.1 Cable Modem
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  • A
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  • Stores we've priced the T25 at

    • Best Buy deals and prices
    • Walmart deals and prices

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