NETGEAR CM2500 vs Hitron CODA56

For most Spectrum homes, keep the supplied modem: Spectrum offers one at no additional charge and requires its equipment for symmetrical service and Home Phone. If you deliberately want a retail modem for an eligible non-symmetrical plan, choose Hitron CODA56 for its single 2.5 Gbps Ethernet port; CM2500 is a narrower fit for an existing gigabit or compatible aggregation setup. Spectrum equipment rules, Hitron specifications, NETGEAR specifications.

Authorization and manufacturer documents checked November 2, 2026. thisPING is reader-supported: when you buy through our links, we may earn a commission at no extra cost to you. As an Amazon Associate, thisPING earns from qualifying purchases.

Quick picks

Compare specifications and all conditions

Working supplied equipment, symmetrical service, or Home Phone

Our pick

Keep Spectrum's modem

Buying condition

Start here before spending anything

Intentionally buying for an eligible non-symmetrical plan

Our pick

Hitron CODA56

Buying condition

Confirm Spectrum authorization for your service; pair with a separate router

Already own CM2500, or specifically need its aggregation arrangement

Our pick

NETGEAR CM2500

Buying condition

Accept gigabit physical links and verify router compatibility

Full comparison table ↔

Swipe to compare. Row labels stay visible.

Your situation	Our pick	Buying condition
Working supplied equipment, symmetrical service, or Home Phone	Keep Spectrum's modem	Start here before spending anything
Intentionally buying for an eligible non-symmetrical plan	Hitron CODA56	Confirm Spectrum authorization for your service; pair with a separate router
Already own CM2500, or specifically need its aggregation arrangement	NETGEAR CM2500	Accept gigabit physical links and verify router compatibility

Your situation	Our pick	Buying condition
Working supplied equipment, symmetrical service, or Home Phone	Keep Spectrum's modem	Start here before spending anything
Intentionally buying for an eligible non-symmetrical plan	Hitron CODA56	Confirm Spectrum authorization for your service; pair with a separate router
Already own CM2500, or specifically need its aggregation arrangement	NETGEAR CM2500	Accept gigabit physical links and verify router compatibility

For other providers, see cable modem buying guide.

Spectrum's authorized modem list: check the tier first

The current Spectrum modem list names “Netgear CM2500” and “Hitron CODA-56” under non-symmetrical Spectrum Internet tiers up to 1G. Spectrum's hyphenated CODA-56 entry corresponds to Hitron's CODA56 retail name. Authorization applies to the listed tier.

Spectrum supports only its own equipment and requires its modem for symmetrical tiers, with equal download and upload speeds. Home Phone is incompatible with customer-owned modems. A manufacturer's general compatibility label does not override those rules. Spectrum policy.

Confirm your download and upload rates, symmetry and exact model before ordering. For a faster tier outside the listing, keep the supplied modem unless Spectrum confirms another arrangement.

• Yes: Eligible non-symmetrical tier and exact model authorized: a retail modem is an option
• No: Symmetrical service: Spectrum requires its supplied modem
• No: Home Phone: customer-owned modems cannot replace the phone equipment
• Partly: Want technician support for the modem: Spectrum supports its own equipment

Source: Spectrum's equipment requirements

CM2500 vs CODA56: the specifications that matter

Sources: NETGEAR, Hitron, datasheet and manual. Ethernet rates describe links, rather than measured throughput.

Speed figures need context. NETGEAR's table gives CM2500 a Spectrum rate of 900 Mbps down / 35 Mbps up; Spectrum's current list groups it up to 1G. Confirm your provisioned rate. Hitron's page advertises uploads up to 1 Gbps, while its datasheet separately lists 700 Mbps for DOCSIS 3.1 OFDMA and 320 Mbps for bonded DOCSIS 3.0 upstream channels. Do not add these into a promised Spectrum upload speed. Sources: the maker pages, datasheet and Spectrum list linked above.

Retail pick after approval: Hitron CODA56

CODA56 is our retail pick because its single 2.5 Gbps socket makes the modem-to-router connection straightforward. Match it to a router with a 2.5 Gbps WAN port; a router's gigabit WAN port would remain a gigabit bottleneck. That extra Ethernet capacity does not change Spectrum's authorized service tier. Hitron specs, NETGEAR's Ethernet explanation.

Variants: confirm CODA56 finish and package separately from the model name. CODA without “56” is a different gigabit-port modem. Check condition, accessories and warranty. CODA56 options, original CODA.

Check price on Amazon

When the NETGEAR CM2500 makes sense

Keep a working CM2500 on an eligible plan if it meets your needs. Buy it only when you accept gigabit links or have verified aggregation. Its name does not mean a 2.5 Gbps port: NETGEAR specifies two gigabit ports. Specifications.

The CM2500 manual requires LACP and Ethernet aggregation on the router's WAN ports. A router offering LAN aggregation for storage does not, by that fact alone, meet this requirement. The manual also says aggregation is disabled by default and the second port should remain unused in that mode.

Model trap: CM3000 has one 2.5 Gbps port plus two gigabit ports; check the carton. CM2500's mid/high-split hardware also does not override Spectrum's symmetrical-service restriction. NETGEAR comparison, Spectrum rules.

View CM2500 at NETGEAR

Why two sockets do not double one device's connection

Separate physical link rate, aggregate capacity and provisioned internet speed. NETGEAR advertises up to 2 Gbps aggregate through CM2500's two 1 Gbps ports when the connected equipment supports aggregation. A computer attached to a router through a single 1 Gbps LAN link still has that link's limit. A 2.5 Gbps modem cannot remove a gigabit bottleneck elsewhere either. CM2500 specifications, Ethernet limits.

Tap a label to explore. You can also hover or use your keyboard.

1. 01CM2500 modem+Two 1 Gbps Ethernet ports

   The up-to-2 Gbps claim requires aggregation.

   Sources: 1: CM2500 uses two gigabit ports and advertises up to 2 Gbps with link aggregation.
2. Two cables; up to 2 Gbps aggregate
   02Router with WAN aggregation+

   Configure LACP and WAN aggregation before connecting both cables.

   Sources: 1: CM2500 uses two gigabit ports and advertises up to 2 Gbps with link aggregation., 2: The router must support LACP and WAN Ethernet port aggregation., 4: Configure aggregation on both devices before connecting multiple Ethernet cables.
3. One 1 Gbps Ethernet link
   03Computer on a gigabit LAN port+

   The final link remains gigabit.

   Sources: 3: A single gigabit Ethernet port limits a connection's capacity.

Aggregate capacity requires compatible equipment and service. Spectrum's tier limits still apply.

Source notes4 references+

1. 1

   CM2500 uses two gigabit ports and advertises up to 2 Gbps with link aggregation.

   www.netgear.com ↗ — source for CM2500 uses two gigabit ports and advertises up to 2 Gbps with link aggregation.

   Connect the two Gigabit ports to a router with link aggregation for up to 2Gbps.

2. 2

   The router must support LACP and WAN Ethernet port aggregation.

   www.downloads.netgear.com ↗ — source for The router must support LACP and WAN Ethernet port aggregation.

   802.3ad LACP ○ Ethernet port aggregation on its WAN ports

3. 3

   A single gigabit Ethernet port limits a connection's capacity.

   kb.netgear.com ↗ — source for A single gigabit Ethernet port limits a connection's capacity.

   devices capable of 2.5 Gbps and 5 Gbps speeds do not operate at full capacity when connected to a single Gigabit Ethernet port.

4. 4

   Configure aggregation on both devices before connecting multiple Ethernet cables.

   kb.netgear.com ↗ — source for Configure aggregation on both devices before connecting multiple Ethernet cables.

   Do not connect the devices to each other using more than one Ethernet cable until after you set up the LAG on each device.

For CODA56, use a single cable to the router's 2.5 Gbps WAN port. For CM2500, ordinary single-cable operation is gigabit; aggregation is a separate configuration. Do not connect both CM2500 ports to an unmanaged switch: NETGEAR warns this can cause a network loop. Hitron connection specification, CM2500 manual.

Complete the modem-to-router kit

Keep a suitable router you own. A new NETGEAR RS300 offers CODA56 a compatible arrangement: one 2.5 Gbps WAN port, two 2.5 Gbps LAN ports and two gigabit LAN ports. Put a compatible computer on multi-gig LAN. This kit does not establish RS300 support for CM2500 WAN aggregation. RS300 specs.

Cables and power: use the supplied Ethernet lead first. Both modems include Ethernet and power adapters; CODA56 also includes coax. An optional Cable Matters 160001 Cat6 lead is an indoor, bare-copper cable; the linked record covers one black 7 ft lead. Measure your route. NETGEAR contents, Hitron contents, Cable Matters options.

Count modem, router if needed, coax, Ethernet leads, power adapters and outlets. See routers for Spectrum and modem vs router for further setup advice.

Activate, then verify the wired path

Have your account details and modem's CM MAC address ready. Hitron's quick guide lists Spectrum's activation route; its Xfinity app instructions apply to Xfinity customers. Installation guide.

1. 1

   Confirm service first

   Recheck authorization, download and upload tier, and phone dependencies before disconnecting equipment.

2. 2

   Connect coax and power

   Use the modem's supplied power adapter and wait for its online indication.

3. 3

   Activate with Spectrum

   Register the CM MAC address using Spectrum's activation process; resolve any qualification warning with Spectrum.

4. 4

   Connect and restart the router

   Connect modem Ethernet to router WAN, restart the router, then check a wired connection before judging Wi-Fi.

Source: Spectrum requirements and Hitron's installation sequence

For slow speeds, check for a gigabit Ethernet bottleneck. For no connection, check coax and activation with Spectrum. Keep old equipment until the replacement works, including phone service. Ethernet limits, setup guidance.

Firmware, warranty and holiday listing checks

The ISP deploys firmware on both models. Buying either does not provide manual update control. NETGEAR's general end-of-service policy is usually three years after its last sale date, rather than your purchase date; ISP deployment is separate. NETGEAR firmware, Hitron firmware, NETGEAR policy.

Check the package's warranty. CM2500 specifies a one-year limited warranty and 90-day complimentary support; NETGEAR requires an authorized reseller and registration. Hitron's CODA56 manual specifies a 180-day hardware warranty and 90 days of basic support; its current US warranty page says most products have a one-year limited warranty, with the box determining coverage. Its product page advertises free chat/email support. These terms conflict: confirm your package with Hitron. CM2500 datasheet, NETGEAR terms, Hitron manual, Hitron warranty, Hitron product page.

For holiday offers, check model, finish, new/refurbished condition, seller authorization, accessories and returns. Match bundled router ports and cables to your intended setup; confirm Spectrum eligibility before gifting.

How we choose

We compare current Spectrum authorization, maker specifications, manuals and support terms, prioritizing eligibility and the complete connection. We have no comparative performance measurements. Existing site records identify linked packages. See our research method.

Verdict

Keep Spectrum's modem for most households, especially symmetrical service or Home Phone. Buy CODA56 only after confirming an eligible plan and deciding you want ownership: its single multi-gig port is the simpler connection. Keep or choose CM2500 when its gigabit ports suit your needs and any intended WAN aggregation is explicitly supported. Buying the higher advertised modem speed does not change what Spectrum provisions.