--- product_id: 497340792 title: "FNIRSI FNB58 USB Tester, PD/QC, USB-C E-Marker Reader, 28V 7A, USB-A/C" brand: "fnirsi" price: "€ 107.21" currency: EUR in_stock: true category: "Fnirsi" url: https://www.desertcart.es/products/497340792-fnirsi-fnb58-usb-tester-pd-qc-usb-c-e-marker store_origin: ES region: Spain --- # Real-time voltage/current/power graphs 28V 7A max power Multi-port USB-A, Micro-USB, Type-C FNIRSI FNB58 USB Tester, PD/QC, USB-C E-Marker Reader, 28V 7A, USB-A/C **Brand:** fnirsi **Price:** € 107.21 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your USB testing game with FNIRSI FNB58 — the ultimate fast-charge protocol guru! ## Quick Answers - **What is this?** FNIRSI FNB58 USB Tester, PD/QC, USB-C E-Marker Reader, 28V 7A, USB-A/C by fnirsi - **How much does it cost?** € 107.21 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/497340792-fnirsi-fnb58-usb-tester-pd-qc-usb-c-e-marker) ## Best For - fnirsi enthusiasts ## Why This Product - Trusted fnirsi brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Cable & Chip Reader:** Reads USB-C E-Marker and DASH cable data, plus onboard temperature and startup time for comprehensive diagnostics. - • **Pro-Grade Data Visualization:** 2.0-inch TFT LCD delivers six-digit readings and real-time ripple/waveform graphs up to 4M samples per second. - • **Seamless App & PC Integration:** Sync with dedicated software for detailed analysis, firmware updates, and remote monitoring—no paper manual needed. - • **All-in-One USB Power Detective:** Monitor voltage, current, power, resistance, and capacity across USB-A, Micro-USB, and Type-C ports with precision. - • **Fast Charge Protocol Whisperer:** Automatically detects and triggers QC2.0/3.0, PD2.0/3.0, VOOC, Super VOOC, and more for flawless fast charging validation. ## Overview The FNIRSI FNB58 is a professional-grade USB tester featuring a 2.0-inch TFT display and multi-port support (USB-A, Micro-USB, Type-C). It accurately measures voltage, current, power, resistance, and capacity while supporting advanced fast charge protocols like PD2.0/3.0, QC2.0/3.0, VOOC, and Super VOOC. With real-time graphical data, E-Marker cable reading, and app/PC integration, it’s designed for tech-savvy professionals who demand precise diagnostics and seamless monitoring of USB charging and data lines. ## Description FNIRSI FNB58 USB Tester, PD/QC, USB-C E-Marker Reader, 28V 7A, USB-A/C | PD2.0/3.0 & QC2.0/3.0, Voltage/Current/Power Monitoring, Real-Time Graphs, Capacity, Ripple, PD Trigger, App/PC Software: desertcart.com: Tools & Home Improvement ## Features - 【Multi-port USB tester】FNIRSI FNB58 has a 2.0-inch TFT LCD display, integrated USB-A, Micro-USB, Type-C interface. It is a USB voltage and current detection meter with APP software, a mobile communication terminal with gravity sensor and a fast charging trigger - 【Multifunction USB Digital Tester】FNB58 uses external 16-bit ADC, PD protocol physical chip. FNB58 USB tester can monitor the voltage, current, power, resistance, capacity, D+/D- voltage etc, it can be used to test the fast charging protocol of chargers - 【Fast Charge Protocol Trigger Detection】FNB58 supports QC2.0/QC3.0, FCP/SCP, AFC, PD2.0/3.0, VOOC/WARP, Super VOOC 1.0/2.0 trigger. The above protocols all support automatic monitoring. MTK-PE automatic detection. Support QC2.O->PD2.0 protocol conversion - 【Parameter Recording】 Six-digit display of voltage, current and power. 10 sets of switchable capacity, power etc. Support low-speed waveform drawing, 2 sps-100 sps sampling rate. Support ripple drawing, up to 4 M sps sampling rate - 【USB tester detection function】The resistance measurement of the wire by the differential pressure method. E-Marker Cable chip reading. DASH Cable data reading. Record of startup time. Onboard temperature measurement. PD monitor. Analog DASH cable - 【Note】To support environmental protection and reduce paper use, the FNB58 does not include a printed manual. You can access the manual, firmware updates, and app information via the QR code provided in the packaging - Ensure the PD function switch is on, select the correct input port, and use a compatible protocol; if incompatible, the device defaults to 5 V output, which may limit power measurement ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BJ253W31 | | Best Sellers Rank | #28,765 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #30 in Voltage Testers | | Brand Name | FNIRSI | | Color | multi-color | | Compatible Devices | USB interfaces, mobile phone chargers, U disks, mobile phones, mobile power supplies, USB-A, Micro-USB, Type-C devices from various brands | | Customer Reviews | 4.3 4.3 out of 5 stars (527) | | Included Components | USB Tester | | Item Weight | 1.6 ounces | | Manufacturer | FNIRSI | | Measurement Type | Voltage, Current, Fast Charge Detection, Etc | | Minimum Operating Voltage | 4 | | Model | FNIRSI-001 | | Number of Items | 1 | | Number of Packs | 1 | | Part Number | FNIRSI-001 | | Power Source | Battery Powered | | Specification Met | Ul, Iec | | Style Name | FNB58 | | Unit Count | 1 Count | | Upper Temperature Rating | 40 °C | ## Product Details - **Brand:** FNIRSI - **Color:** multi-color - **Item Weight:** 1.6 ounces - **Power Source:** Battery Powered - **Style:** FNB58 ## Images ![FNIRSI FNB58 USB Tester, PD/QC, USB-C E-Marker Reader, 28V 7A, USB-A/C - Image 1](https://m.media-amazon.com/images/I/51ziOWlFV8L.jpg) ![FNIRSI FNB58 USB Tester, PD/QC, USB-C E-Marker Reader, 28V 7A, USB-A/C - Image 2](https://m.media-amazon.com/images/I/51d6NEKQSGL.jpg) ![FNIRSI FNB58 USB Tester, PD/QC, USB-C E-Marker Reader, 28V 7A, USB-A/C - Image 3](https://m.media-amazon.com/images/I/51xS9ovo1SL.jpg) ![FNIRSI FNB58 USB Tester, PD/QC, USB-C E-Marker Reader, 28V 7A, USB-A/C - Image 4](https://m.media-amazon.com/images/I/51as3XN7VzL.jpg) ![FNIRSI FNB58 USB Tester, PD/QC, USB-C E-Marker Reader, 28V 7A, USB-A/C - Image 5](https://m.media-amazon.com/images/I/51WRjih-f4L.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - FNIRSI USB Tester 4-28V 7A LCD USB A&C Voltage Current Power Tester Multimeter with App Software, Fast Charge Detection Trigger Capacity Ripple Measurement, PD2.0/PD3.0,QC2.0/QC3.0 - Treedix USB Cable Tester Board USB Cable Checker Data Wire with Acrylic Case Charging Test Data Line Type-C Micro Type A Type B - Treedix USB Cable Tester with 2.4" Color Screen for eMarker Reading, PD 3.0/3.1 Detection, Resistor and Continuity Check, Compatible with Lightning, Type-C, Micro-B 2.0/3.0, and Mini-B Cables --- ## 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.es/products/497340792-fnirsi-fnb58-usb-tester-pd-qc-usb-c-e-marker](https://www.desertcart.es/products/497340792-fnirsi-fnb58-usb-tester-pd-qc-usb-c-e-marker) --- *Product available on Desertcart Spain* *Store origin: ES* *Last updated: 2026-08-28*