Ignore the erroneous answer that Cat 8 is a marketing gimmick. As noted by someone else, Cat 8 is rated for 40Gbps/2000Mhz which most people, especially home users, cannot utilize at this time. If you want to future proof your wiring, get Cat 8 but at the speeds you mention, a decent shielded Cat 5e or Cat 6 or 6a will work just fine. You'll see no speed boost just from a "faster" cable. Avoid Cat 7 and 7A due to finicky proprietary connector issues.

Does this have to plug into the router or can it plug into a Wifi extender?

If your wifi extender is set to allow connections to your main access point via the Ethernet port, then yes. It will work just like any other Ethernet cable. If you have tried a different cable and it did not work, your extender is either not setup properly to allow this or it is not capable of it.

will this cable make a difference if I'm already hitting max speeds with my cat6? my interenet speed plan is 400mpbs

Cat6 or Cat6a is all you need. Any latency you feel is either the port or you provider. CAT8 is bs, save your money.

Does this cable have any markings on the cable itself that identify it as category 8?

Other than Cat8 written in white on the actual cable. There are no other markings on it.

Dbillionda Cat 8 Ethernet Cable 6ft 40gbps 2000mhz Rj45 Lan

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Description

⚡ Connect faster, game harder, stream smoother — don’t get left behind!

BLAZING 40 GBPS SPEED - Experience lightning-fast data transfer that keeps your gaming and streaming flawlessly smooth.
OUTDOOR READY DURABILITY - Waterproof, UV-resistant PVC jacket ensures your network stays strong rain or shine, indoors or buried.
HEAVY DUTY DOUBLE SHIELDING - Minimize interference with advanced F/FTP shielding for rock-solid, low-latency connections.
ULTRA WIDE 2000 M HZ BANDWIDTH - Handle massive data loads effortlessly for next-level 4K/8K streaming and smart home setups.
UNIVERSAL RJ 45 COMPATIBILITY - Seamlessly connect with all your devices—from PS5 and Xbox to routers and smart TVs—without missing a beat.

The DbillionDa Cat 8 Ethernet Cable delivers ultra-high-speed 40Gbps data transfer with a massive 2000MHz bandwidth, supported by thick 26AWG conductors and double-shielded F/FTP design to reduce interference. Built tough with a waterproof, UV-resistant PVC jacket, it’s perfect for both indoor and outdoor use, including direct burial. Compatible with a wide range of devices featuring RJ45 ports, this cable ensures stable, low-latency connections for gaming, streaming, and professional networking.

Specifications

ASIN	B07QLXC6QR
Best Sellers Rank	#2 in Cat 7 Ethernet Cables
Brand Name	DbillionDa
Color	Black
Compatible Amazon Tablet Models	Amazon Fire HD 10 11th Generation, Amazon Fire HD 10 13th Generation, Amazon Fire HD 10 5th Generation, Amazon Fire HD 10 7th Generation, Amazon Fire HD 10 9th Generation, Amazon Fire HD 10 Kids 11th Generation, Amazon Fire HD 10 Kids 13th Generation, Amazon Fire HD 10 Kids 7th Generation, Amazon Fire HD 10 Kids 9th Generation, Amazon Fire HD 10 Kids Pro 11th Generation, Amazon Fire HD 10 Kids Pro…
Compatible Devices	Any device with an RJ45 port, including Monitor PS3, PS4, PS5, Server, Projector, DVD Player Notebooks, PCs, Network Cards, Macs, PoE Devices Patch Panels, Switches, Laptop, Scanner, Tablet Routers, Modems, Printer, Smart Watch, Splitters
Compatible Phone Models	Any device with an RJ45 port, including Routers, Monitor, Modems, Printer, Smart Watch, PS3, PS4, PS5, Server, Projector, DVD Player, Patch Panels, Switches, Laptop, Scanner, Tablet, Notebooks, PCs, Network Cards, Macs, PoE Devices, Xbox Series X, Xbox Series S, Xbox One, VR, PlayStation Other Video Game Consoles, TVs, Hubs, Motherboards, RJ45 Adapter
Connectivity Technology	Ethernet
Connector Gender	Male-to-Male
Connector Type	RJ45
Customer Package Type	Standard Packaging
Customer Reviews	4.7 4.7 out of 5 stars (70,144)
Data Transfer Rate	40 gigabits_per_second
Ethernet Cable Category	Cat 8
Frequency	2000 MHz
Gauge	26 AWG
Indoor Outdoor Usage	Indoor, Outdoor
Item Length	72 inches
Item Shape	Round
Item Weight	2.4 ounces
Manufacturer	DbillionDa
Maximum Current	6 A
Maximum Voltage	15 volts
Model	cat8 6ft ethernet cable
Model Name	Cat8 High Speed ethernet cable 6ft
Number of Items	1
Number of Pins	8
Other Special Features of the Product	Heat Resistant/ High Speed/ UV Resistant/ Water Resistant/ Waterproof/ Weatherproof
Outer Material	Polyvinyl Chloride (PVC)
Part Number	internet cable
Recommended Uses For Product	Any device with an RJ45 port, including Routers, Monitor, Modems, Printer, Smart Watch, PS3, PS4, PS5, Server, Projector, DVD Player, Patch Panels, Switches, Laptop, Scanner, Tablet, Notebooks, PCs, Network Cards, Macs, PoE Devices, Xbox Series X, Xbox Series S, Xbox One, VR, PlayStation Other Video Game Consoles, TVs, Hubs, Motherboards, RJ45 Adapter
Specification Met	TIA
UPC	787894603219
Unit Count	6 Count

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Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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DbillionDa Cat 8 Ethernet Cable, 6FT 40Gbps 2000MHz RJ45 LAN Cable | 3FT 6FT 10FT 15FT 20FT 25FT 30FT 35FT 40FT 50FT 60FT 65FT 100FT 150FT Internet Cable for Router, Modem, Switch, PS5, Xbox

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