does this work with telephone line?

Yes, the RJ45 coupler works with telephone line but you need to use Cat7, Cat6, or Cat5e to get the speed effect. Hope this helps

Are these couplers capable of 10gbps or 1gbps? The description says 10gbps but the specification says 1gbps.

Hi friend, The RJ45 coupler Ethernet extender supports 1Gbps at max. Hope it helps.

can i connect 4 150ft ethernet cords to them?

Yes and No. The maximum allowed length for ethernet is 328 ft, but you can use an ethernet switch to extend another 328 ft. So, you can actually go the desired length (600 ft) by connecting as follows - 150' cable, coupling, 150' cable, switch, 150' cable, coupling, 150' cable. Here's a typical 5 port switch - NETGEAR ProSAFE 5-Port Gigabit Ethernet Switch (GS105 v5) ~$30

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UGREEN RJ45 Coupler 5 Pack, Cat7 Ethernet Female to Female | Female to Female Coupler with Thunder Protection. Extends Cat7/Cat6/Cat5e Cables. 5 Pack for Home/Office Networks

Product ID: 47943701

Details

Brand
UGREEN
Cable type
Ethernet
Compatible devices
Network with
Connector type
Ethernet RJ45
Special feature
Inner metal

⚡1000 Mbps Gigabit Speed

🔗Universal RJ45 Compatibility

🛡️Full Metal EMI Shielding

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Description

🔌 Connect Like a Pro — Never Let Your Network Hold You Back!

PLUG PLAY SIMPLICITY - Effortlessly connect two Ethernet cables—no drivers, no hassle.
ROBUST METAL SHIELDING - Protects against interference for ultra-stable transmissions up to 50 meters.
VERSATILE COMPATIBILITY - Works flawlessly with Cat5 to Cat8 cables and all RJ45 devices.
COMPACT DURABLE DESIGN - Heat-resistant ABS housing built to last in any home or office setup.
SEAMLESS GIGABIT CONNECTIVITY - Extend your network without losing speed or data integrity.

The UGREEN RJ45 Coupler 5 Pack offers a professional-grade solution to extend Ethernet cables with zero speed loss. Featuring full metal shielding to eliminate interference and support for up to 1000 Mbps, these female-to-female connectors ensure stable, high-speed data transmission. Compact, durable, and universally compatible with Cat5 through Cat8 cables, they’re perfect for seamless home or office network expansions.

Specifications

ASIN	B016B13U5S
Best Sellers Rank	16,287 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 309 in Ethernet Cables
Brand	UGREEN
Cable Type	Ethernet
Colour	Black
Compatible Devices	Network devices with RJ45 connector
Compatible Phone Models	No Compatible Phone Models
Connectivity Technology	Ethernet
Connector Gender	Female-to-Female
Connector Type	Ethernet, RJ45
Country Of Origin	China
Customer Package Type	FFP
Customer Reviews	4.6 4.6 out of 5 stars (3,578)
Data Transfer Rate	1000 Megabits Per Second
Ethernet Cable Category	Cat 6
External Testing Certification	Não aplicável
Frequency	1000 MHz
Indoor Outdoor Usage	Indoor
Item Shape	Flat
Item Weight	0.11 Kilograms
Manufacturer	Ugreen Group Limited
Manufacturer Part Number	2724595936114
Model Name	20390P5
Model Number	20390P5
Number of Items	5
Number of Pins	64
Other Special Features of the Product	Inner metal shielding layer for stable speed
Outer Material	Plastic
Recommended Uses For Product	Ethernet connection extension, Joining two short Ethernet cables, Long-distance Ethernet transmission
Specification Met	EIA, TIA
Unit Count	5.0 count

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9682 Ft

Duties & taxes included

In stock

Sold byAmazon HungaryDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hungary.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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