Cat7 and Cat8 Connectors: What You Need to Know

The Quick Answer

If you have been searching for "Cat7 connectors" or "Cat8 connectors," you are not alone. These cable categories show up in product listings, spec sheets, and forum debates constantly. But the connector story for Cat7 and Cat8 is very different from Cat5e and Cat6A, and understanding those differences will save you from buying the wrong cable or the wrong connectors for your job.

Cat7: The Standard That Never Took Off

Cat7 (formally Class F cabling) was defined by the ISO/IEC 11801 standard. It specifies bandwidth up to 600 MHz and supports 10 Gigabit Ethernet. On paper, those numbers look like a step up from Cat6A's 500 MHz. In practice, Cat7 has a fundamental problem that prevented it from gaining real market adoption: its connectors.

Cat7 connector requirements

Cat7 was designed to use two connector types, neither of which is the standard RJ45 (8P8C) plug that every network switch, router, patch panel, and NIC on the planet uses.

• GG45 connector. A backward-compatible connector that can accept RJ45 plugs in its lower contacts but uses additional upper contacts for the Cat7-rated connection. The full Cat7 performance requires both the GG45 plug and a GG45 jack, which means replacing all your patch panels and wall jacks.
• TERA connector. A completely different form factor developed by Siemon. It is not backward compatible with RJ45 at all. TERA connectors provide excellent shielding and support Cat7A (1000 MHz) performance, but they require proprietary jacks, patch panels, and patch cords throughout the entire link.

This is the core issue. The entire networking equipment industry standardized on RJ45 decades ago. Cat7's requirement for GG45 or TERA connectors means you cannot plug a Cat7-terminated cable into a standard switch port. You need specialized equipment at both ends.

Why Cat7 failed

• No TIA backing. The Telecommunications Industry Association (TIA) never ratified Cat7. It is an ISO/IEC standard only. In North America, where TIA standards dominate, Cat7 has virtually no presence in structured cabling specifications.
• Proprietary connectors. GG45 and TERA connectors never achieved the manufacturing volume, competitive pricing, or tooling ecosystem that RJ45 has. The connector cost alone makes Cat7 installations significantly more expensive.
• Cat6A covers the use case. Cat6A supports 10 Gigabit Ethernet at the full 100-meter distance using standard RJ45 connectors. Since 10GbE was the performance target that Cat7 aimed at, Cat6A renders Cat7 unnecessary for the vast majority of installations.

Cat8: High Speed, Short Distance, Data Centers Only

Cat8 is the newest copper cabling category, defined under TIA-568.2-D (Cat8.1) and ISO/IEC (Cat8.2). It supports bandwidth up to 2000 MHz and data rates of 25 Gbps (25GBASE-T) and 40 Gbps (40GBASE-T). Unlike Cat7, Cat8 does have TIA backing and does use RJ45 connectors. But there is a major catch.

Cat8 connector requirements

Cat8.1 uses standard 8P8C RJ45 connectors, but they must be fully shielded connectors rated for Cat8's S/FTP (Screened/Foiled Twisted Pair) cable construction. The shielding is not optional. Cat8 cable has individual foil shielding around each pair plus an overall braided shield. The connector must provide a continuous shield path from the cable to the jack for Cat8 to meet its rated performance.

Cat8.2 (the ISO/IEC variant) can use either RJ45 or non-RJ45 connectors, but Cat8.1 is the version relevant to most of the market.

The 30-meter limitation

Cat8's 30-meter distance limit is by design. At 2000 MHz, signal attenuation over copper is severe. The 30-meter envelope fits the typical data center row, where a top-of-rack switch connects to servers within the same cabinet or adjacent cabinets. It does not fit the 100-meter horizontal runs that define standard structured cabling.

If you are running cable from a telecom room to a wall jack 50 meters away, Cat8 is not an option. Cat6A supports that distance at 10 Gbps without issue.

Cat6A vs Cat7 vs Cat8: Specifications Compared

Here is a side-by-side comparison of the three cable categories that support 10 Gbps and above.

Cat6A is the only category that combines 10G speed, 100-meter distance, standard RJ45 connectors, and backing from both TIA and ISO/IEC. This is why it dominates 10G copper installations.

Can You Put an RJ45 Connector on Cat7 Cable?

This is one of the most common questions in network cabling, and the answer is technically yes, but practically no.

Cat7 cable uses individual foil shielding around each twisted pair (S/FTP construction) with an overall braid shield. The internal conductors are standard 23 AWG copper in the same 4-pair configuration as Cat6A. If the cable's internal wire layout is physically compatible with an 8P8C RJ45 connector, you can strip it, arrange the wires in T568B order, and crimp an RJ45 plug onto it.

But here is what you lose:

• Cat7 performance. The Cat7 specification requires GG45 or TERA connectors. An RJ45 termination does not meet the connector requirements of the standard. Your link is no longer a Cat7 link, regardless of what cable you used.
• Shielding continuity. Standard unshielded RJ45 connectors break the shield path. Even shielded RJ45 connectors are designed for Cat6A shielding, not the more complex Cat7 S/FTP construction. The individual pair foils may not terminate properly.
• Money. Cat7 cable costs significantly more than Cat6A cable. If you are going to terminate it with RJ45 connectors and get Cat6A-level performance, you paid a premium for cable features you are not using.

The "Cat7" Cable You See Online Is Probably Not Cat7

Search for "Cat7 Ethernet cable" on any major retail site and you will find hundreds of results, most of them with RJ45 connectors already attached. These products are misleading.

True Cat7 cable terminated to Cat7 spec requires GG45 or TERA connectors. If a product comes with standard RJ45 plugs, it is not a Cat7 link. What these products typically are is Cat6A-grade or sometimes Cat6-grade shielded cable with Cat7 printed on the packaging for marketing purposes.

• No independent certification. Legitimate Cat6A cable comes with certification test reports. Most "Cat7" consumer cables have no third-party performance verification.
• RJ45 connectors = not Cat7. If it has RJ45 connectors, the link cannot meet Cat7 specifications by definition. The connectors are the limiting component.
• No performance advantage over Cat6A. Even if the cable itself has Cat7-level shielding, the RJ45 termination limits performance to Cat6A levels. You are paying more for the same result.

For professional installations, this matters. Specifying "Cat7" on a project when you mean "shielded Cat6A" causes confusion and can create compliance issues. Use the correct terminology: if the link uses RJ45 connectors and is rated for 10GbE at 100 meters, it is a Cat6A installation.

When Cat8 Actually Makes Sense

Cat8 has a legitimate use case, but it is narrow. Here is where Cat8 is the right choice and where it is not.

In most structured cabling environments, you will never encounter a legitimate need for Cat8. The 25G and 40G data center market is increasingly moving to fiber optic connections anyway, which offer longer distances, lower latency, and immunity to electromagnetic interference.

Shielding Requirements: Both Cat7 and Cat8 Are Shielded-Only

Unlike Cat6A, which is available in both unshielded (UTP) and shielded (F/UTP or U/FTP) variants, Cat7 and Cat8 require shielded cable construction. There is no unshielded version of either standard.

• Cat7 (S/FTP): Individual foil shield around each twisted pair, plus an overall braided shield around all four pairs. This dual-layer shielding is what enables the 600 MHz bandwidth, but it also makes the cable stiffer, heavier, and harder to terminate.
• Cat8 (S/FTP): Same construction as Cat7, with individual pair foils and an overall braid. At 2000 MHz, the shielding is absolutely critical. Any break in the shield path at the connector causes immediate performance degradation.

Shielded cable requires shielded connectors, shielded patch panels, shielded wall jacks, and proper grounding throughout the entire link. If any component in the chain is unshielded or improperly grounded, the shielding can actually make crosstalk worse by acting as an antenna. This is a common mistake in installations where shielded cable is used with unshielded connectors.

For shielded Cat6A installations that need proper EMI protection, the Cat6A/7 Shielded Connector provides full shield continuity in an RJ45 form factor. This is the practical way to get shielded performance without leaving the RJ45 ecosystem.

What CrimpShop Recommends for 10G

Here is the practical reality. If you are an installer, systems integrator, or IT professional specifying cable for a building, Cat6A is the answer for 10G copper. Cat7's connector incompatibility makes it a non-starter. Cat8's distance limitation makes it irrelevant for horizontal cabling.

The right connector for Cat6A termination is the ezEX48 Cat6A. It is a pass-through connector designed specifically for Cat6A cable's larger diameter, with proper strain relief and wire channel geometry for the thicker jacket. For shielded Cat6A runs, the Cat6A/7 Shielded Connector handles both Cat6A and Cat7 cable with a full shield path through the RJ45 interface.

Pair either connector with the EzEX Crimp Tool or PTS PRO Universal Crimp Tool, and you have a termination system that handles every 10G installation scenario without stepping outside the RJ45 ecosystem.

Recommended Products for 10G Termination

These connectors and tools handle 10 Gigabit Ethernet termination using standard RJ45, which is what the vast majority of 10G installations actually require.

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