--- product_id: 110162458 title: "Networx Fast Ethernet Loopback Tester (Cat5e) - RJ45 Port Validator for 10/100Base-T Networks - Legacy Network Diagnostics" brand: "networx" price: "€ 16.25" currency: EUR in_stock: true category: "Networx®" url: https://www.desertcart.at/products/110162458-networx-fast-ethernet-loopback-tester-cat5e-rj45-port-validator-10 store_origin: AT region: Austria --- # 10/100 Mbps speed support Loops Orange & Green pairs for link verification Durable molded PVC housing Networx Fast Ethernet Loopback Tester (Cat5e) - RJ45 Port Validator for 10/100Base-T Networks - Legacy Network Diagnostics **Brand:** networx **Price:** € 16.25 **Availability:** ✅ In Stock ## Summary > 🔌 Plug into legacy networks with confidence—test smarter, not harder! ## Quick Answers - **What is this?** Networx Fast Ethernet Loopback Tester (Cat5e) - RJ45 Port Validator for 10/100Base-T Networks - Legacy Network Diagnostics by networx - **How much does it cost?** € 16.25 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/110162458-networx-fast-ethernet-loopback-tester-cat5e-rj45-port-validator-10) ## Best For - networx enthusiasts ## Why This Product - Trusted networx brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact & Durable Design:** Fits perfectly in your toolkit with gold-plated contacts for reliable, repeat testing. - • **Instant Link Verification:** Loops key wire pairs to confirm active connections in seconds. - • **Cat5e Optimized Performance:** Engineered for flawless 10/100 Mbps network validation—no guesswork needed. - • **Lifetime Warranty Confidence:** Backed by Networx’s lifetime warranty for worry-free diagnostics. - • **Legacy Network Diagnostics Made Simple:** Effortlessly test and troubleshoot 10/100Base-T ports on older equipment. ## Overview The Networx Fast Ethernet Loopback Tester is a compact, cost-effective tool designed to validate and troubleshoot 10/100Base-T Ethernet ports on legacy network equipment. Featuring gold-plated contacts and a durable molded PVC housing, it loops the Orange and Green wire pairs to verify link status quickly and reliably. Optimized for Cat5e networks and backed by a lifetime warranty, this tester is an essential addition to any professional’s network toolkit. ## Description Legacy 10/100 Port Tester. Verify network connectivity on legacy equipment with the Networx Fast Ethernet Loopback Tester. This cost-effective adapter loops the Orange and Green wire pairs (1-2 and 3-6) to confirm link status on standard 10Base-T and 100Base-TX ports. Ideal for diagnosing older switches and wall jacks, it offers a durable, molded solution for basic network troubleshooting. (Note: For Gigabit testing, please see our Gigabit Loopback Tester: LB-GB45S). ## Features - LEGACY NETWORK DIAGNOSTICS: A cost-effective loopback plug designed specifically for testing standard Fast Ethernet (10Base-T and 100Base-TX) ports. - LINK VERIFICATION: Loops the Orange and Green pairs (Pins 1-3 and 2-6) to verify link status and troubleshoot active ports on older network equipment. - COMPACT DESIGN: Durable molded PVC housing fits easily in any tool kit. Gold-plated contacts ensure a reliable connection for repeated testing. - CAT5E RATED: Optimized for 10/100 Mbps networks. (Note: For Gigabit testing, please use the Networx Gigabit Loopback Tester, Part: LB-GB45S). - LIFETIME WARRANTY: Backed by the Networx Lifetime Warranty. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00E4OKJ68 | | Brand | Networx | | Color | Blue | | Compatible Devices | Router, Switch, Computer | | Connector Type | Ethernet | | Customer Reviews | 4.3 4.3 out of 5 stars (32) | | Global Trade Identification Number | 00845425016522 | | Item Dimensions | 2 x 1 x 0.75 inches | | Item Weight | 18.14 g | | Manufacturer | Networx™ | | Mfr Part Number | LB-RJ45S | | Model Number | LB-RJ45S | | Number of Items | 1 | | Number of Ports | 2 | | Package Quantity | 1 | | UPC | 845425016522 | | Unit Count | 1 Count | | Warranty Type | Lifetime | ## Product Details - **Brand:** Networx - **Color:** Blue - **Compatible Devices:** Router, Switch, Computer - **Connector Type:** Ethernet - **Item dimensions L x W x H:** 2 x 1 x 0.75 inches ## Images ![Networx Fast Ethernet Loopback Tester (Cat5e) - RJ45 Port Validator for 10/100Base-T Networks - Legacy Network Diagnostics - Image 1](https://m.media-amazon.com/images/I/71IVjS2+I7L.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Is there any danger of using these to check ports in a power-over-ethernet (poe) switch?** A: Only if you have done some crazy hardware alterations or a homicidal arch nemesis. **Q: Will this work for 10Gbase-T connections over cat6a?** A: It should. Cat6 should pass lower data rates just fine. You'll just get link lights or not. **Q: Will this test if the eithernet port on my camera is working?** A: It will be able to test Ethernet connection if your device has a network card that transmit the signal. **Q: Where is the product made? Thanks.** A: These are made in China, shipped from USA --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/110162458-networx-fast-ethernet-loopback-tester-cat5e-rj45-port-validator-10](https://www.desertcart.at/products/110162458-networx-fast-ethernet-loopback-tester-cat5e-rj45-port-validator-10) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-10-31*