--- product_id: 110162458 title: "Networx Fast Ethernet Loopback Tester (Cat5e) - RJ45 Port Validator for 10/100Base-T Networks - Legacy Network Diagnostics" brand: "networx" price: "₱1725" currency: PHP in_stock: true reviews_count: 7 category: "Networx" url: https://www.desertcart.ph/products/110162458-networx-fast-ethernet-loopback-tester-cat5e-rj45-port-validator-10 store_origin: PH region: Philippines --- # 10/100 Mbps Fast Ethernet support Loops Orange & Green pairs for instant link verification Compact, durable PVC housing with gold-plated contacts Networx Fast Ethernet Loopback Tester (Cat5e) - RJ45 Port Validator for 10/100Base-T Networks - Legacy Network Diagnostics **Brand:** networx **Price:** ₱1725 **Availability:** ✅ In Stock ## Summary > 🔧 Diagnose like a pro, stay connected like a boss. ## 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?** ₱1725 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/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 - • **Lifetime Warranty Confidence:** Backed by Networx’s lifetime warranty—because your network deserves tools that never quit. - • **Optimized for Cat5e Networks:** Engineered specifically for 10/100 Mbps speeds, guaranteeing accurate diagnostics on standard Ethernet setups. - • **Tool Kit Ready, Built to Last:** Compact, molded PVC design with gold-plated contacts ensures reliable, repeatable testing wherever your network takes you. - • **Instant Link Status Confirmation:** Loops critical wire pairs (Pins 1-3 & 2-6) to verify active ports and troubleshoot legacy network gear in seconds. - • **Legacy Network Diagnostics Made Effortless:** Cost-effective loopback plug tailored for 10Base-T & 100Base-TX ports—perfect for maintaining older infrastructure without breaking the bank. ## Overview The Networx Fast Ethernet Loopback Tester (Cat5e) is a precision tool designed for quick and reliable diagnostics of legacy 10/100Base-T Ethernet ports. Featuring a compact, durable design with gold-plated contacts, it loops the essential wire pairs to verify link status on older network equipment. Ideal for IT professionals managing legacy infrastructure, this tester ensures fast troubleshooting with lifetime warranty-backed reliability. ## 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). Review: Intended for IT - Very Good product and works as it it intended for. Just make sure you get the right one for the job. The Gig loopback is different from the RJ45. Although technically both are RJ45 structure, the internal wiring is different. These loopback are great for Analyst remoting-in and conducting their own company proprietary test on their machines. Review: A Test Kit Must - Having a reliable way to quickly to check for a port failure is a must. Doing a quick loopback test is a fast, easy way to check a port. I like the design of this device because all of the wires are tucked inside the body. ## 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 out of 5 stars 32 Reviews | | Global Trade Identification Number | 00845425016522 | | Item Dimensions | 2 x 1 x 0.75 inches | | Item Weight | 0.04 Pounds | | Item dimensions L x W x H | 2 x 1 x 0.75 inches | | Manufacturer | Networx™ | | Mfr Part Number | LB-RJ45S | | Model Number | LB-RJ45S | | Number of Ports | 2 | | Package Quantity | 1 | | Power Plug Type | No Plug | | UPC | 845425016522 | | Unit Count | 1.0 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) ![Networx Fast Ethernet Loopback Tester (Cat5e) - RJ45 Port Validator for 10/100Base-T Networks - Legacy Network Diagnostics - Image 2](https://m.media-amazon.com/images/I/71i9XvGNCEL.jpg) ![Networx Fast Ethernet Loopback Tester (Cat5e) - RJ45 Port Validator for 10/100Base-T Networks - Legacy Network Diagnostics - Image 3](https://m.media-amazon.com/images/I/61ts9XStUpL.jpg) ![Networx Fast Ethernet Loopback Tester (Cat5e) - RJ45 Port Validator for 10/100Base-T Networks - Legacy Network Diagnostics - Image 4](https://m.media-amazon.com/images/I/61WDZ8LPogL.jpg) ![Networx Fast Ethernet Loopback Tester (Cat5e) - RJ45 Port Validator for 10/100Base-T Networks - Legacy Network Diagnostics - Image 5](https://m.media-amazon.com/images/I/61ViiNFxJEL.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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Intended for IT *by J***A on November 16, 2021* Very Good product and works as it it intended for. Just make sure you get the right one for the job. The Gig loopback is different from the RJ45. Although technically both are RJ45 structure, the internal wiring is different. These loopback are great for Analyst remoting-in and conducting their own company proprietary test on their machines. ### ⭐⭐⭐⭐⭐ A Test Kit Must *by C***N on September 4, 2020* Having a reliable way to quickly to check for a port failure is a must. Doing a quick loopback test is a fast, easy way to check a port. I like the design of this device because all of the wires are tucked inside the body. ### ⭐⭐⭐⭐ It works *by T***I on July 29, 2020* There's a lot of bad reviews for this product, so I was hesitating to make a purchase. In the end, I decided to make a gamble purchase and I'm happy to say that I'm a lucky one. The products are working as expected and I don't need to request for any refund or anything else. There's nothing much to add for this review other than to share my experience. --- ## 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.ph/products/110162458-networx-fast-ethernet-loopback-tester-cat5e-rj45-port-validator-10](https://www.desertcart.ph/products/110162458-networx-fast-ethernet-loopback-tester-cat5e-rj45-port-validator-10) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-07-11*