This Cat6/Cat5e/Cat5 outside splice connector is very small and easy to assemble without any tools.
eBay
Ethernet Cable Cat7 Lan Cable STP RJ 45 Network Cable rj45 Patch Cord /1m/2m/30m for Router Laptop Ethernet Cable
Aliexpress UK
Heavy duty Cat6 RJ45 couplers extend the connection between two Ethernet patch cables. This 8P8C female to female Ethernet coupler is backward compatible with the Cat5e network. Item Type: RJ45 Coupler.
eBay
Vention Ethernet Cable RJ 45 Cat7 Lan Cable STP RJ45 Network Cable for Cat6 Compatible Patch Cord for Router Cat7 Ethernet Cable
Aliexpress UK
What to do when the network cable is not long enough?. Buy a longer one?. No, there is a more convenient and budget-friendly way. You just need to buy a network cable coupler to connect two short cables together and extend for use.
eBay
CYANMI Ethernet Cable CAT8 40Gbps CAT6 Ethernet Cable Network Lan for PC Modem Laptop PS 5 Router RJ45 Flat Cat 8 Ethernet Cable
Aliexpress UK
CAT6 standard performance of up to 250 MHz, backward compatible with CAT5/CAT5E. Waterproof RJ45 Coupler. Shielded RJ45 female to female field-installable coupler for seamless connectivity. Why choose our Waterproof RJ45 Coupler?.
eBay
CYANMI Ethernet Cable CAT8 40Gbps CAT6 Ethernet Cable Network Lan for PC Modem Laptop PS 5 Router RJ45 Flat Cat 8 Ethernet Cable
Aliexpress UK
RJ45 CAT5 Coupler Plug Adapter Network LAN Cable Extender Connector. 1 x RJ45 network LAN cable connector coupler. ETHERNET CABLE COUPLER. Connector Type: RJ-45 8-core Internet cable (ordinary network cable) to connector.
eBay
CYANMI Ethernet Cable CAT8 40Gbps CAT6 Ethernet Cable Network Lan for PC Modem Laptop PS 5 Router RJ45 Flat Cat 8 Ethernet Cable
Aliexpress UK
10pcs x RJ45 network LAN cable connector coupler. Model Number: Network Plug. Usage: two lines through this product into a longer cable.
eBay
ZoeRax 1/5/10/30PCS Gigabit RJ45 Network Keystone Coupler Ethernet Extender Cat6 Cat5e Cat5 Ethernet Cable Adapter LAN Connector
Aliexpress UK
What is this?RJ45 waterproof Ethernet connector CAT6 coupler provides straight-through Cat5/5e Ethernet cable connection, widely used in Ethernet connections for electronic equipment, network communications, surveillance cameras, etc.What will I get?RJ45 Panel Mount Coupler, ,Intermediate connector size:37mm x 28mm/1.45inch x 1.1 inch,Connector Type: RJ45; Cable Type: Ethernet; Compatible Devices: For Cat5/5e Ethernet Cable; Waterproof: IP67; Shell Material: Plastic; The Package Contains: 2 Pack Dual Head RJ45 CouplerAre there any advantages of the product?It has good waterproof performance and meets the requirements of the IP67 standard. It has a solid shell, which is durable and wear-resistant.
eBay
RJ45 Coupler Cat6 Cat5e Ethernet Cable Extender Adapter 1 to 2 Dual Female RJ45 1000Mbps LAN Interface Ethernet Socket Connector
Aliexpress UK
RJ45 Cat5e Cat6 Network LAN Ethernet Patch Cable Plug End Connector Boots Lot UK. Snag-less boot/s for CAT5 / CAT5E / CAT6 Networking Cable. 100 x RJ45 Ethernet Network Connector Boots. Protect the plug latch from snagging when pulling cords.
eBay
Vention RJ45 Splitter Connector Adapter 1 to 2 Ways Ethernet Splitter Coupler Contact Modular Plug Connect Laptop Ethernet Cable
Aliexpress UK