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

Product ID: 47943701

Details

Brand
UGREEN
Cable type
Ethernet
Compatible devices
Network with
Connector type
Ethernet RJ45
Special feature
Data Transfer

⚡1000 Mbps Gigabit Speed

🔗Universal RJ45 Compatibility

🛡️Full Metal EMI Shielding

¥3571

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔌 Connect Like a Pro, Stay Ahead of the Pack!

PLUG PLAY SIMPLICITY - No drivers, no hassle—just snap two cables together and keep working.
VERSATILE COMPATIBILITY - Works flawlessly with Cat5 to Cat8 cables and all RJ45 devices—future-proof your network.
COMPACT DURABLE DESIGN - Space-saving ABS housing resists heat and aging, perfect for home or office setups.
ROCK SOLID METAL SHIELDING - Internal metal layer blocks interference for ultra-stable data flow.
SEAMLESS GIGABIT CONNECTIVITY - Extend your network without losing speed—up to 1000 Mbps, guaranteed.

The UGREEN RJ45 Coupler 5 Pack offers a reliable, high-speed Ethernet extension solution with Cat7 compatibility. Featuring a sturdy metal shielding layer to prevent interference and maintain stable 1000 Mbps data transfer, these female-to-female connectors ensure seamless network expansion. Compact, durable, and universally compatible with RJ45 cables from Cat5 to Cat8, this pack is ideal for professional home and office networking setups.

Specifications

ASIN	B016B13U5S
Best Sellers Rank	29,926 in Computers & Accessories ( See Top 100 in Computers & Accessories ) 528 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	Box
Customer Reviews	4.6 4.6 out of 5 stars (3,581)
Data Transfer Rate	1000 Megabits Per Second
Ethernet Cable Category	Cat 5e
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	Data Transfer
Outer Material	Plastic
Recommended Uses For Product	Ethernet cable extension and combining
Specification Met	EIA, TIA
Unit Count	5.0 count

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