--- product_id: 497340792 title: "FNIRSI FNB58 USB Tester, PD/QC, USB-C E-Marker Reader, 28V 7A, USB-A/C" brand: "fnirsi" price: "S$107" currency: SGD in_stock: true category: "Fnirsi" url: https://www.desertcart.sg/products/497340792-fnirsi-fnb58-usb-tester-pd-qc-usb-c-e-marker store_origin: SG region: Singapore --- # Supports PD2.0/3.0 & QC2.0/3.0 fast charge protocols 2.0-inch TFT LCD with real-time graphs 28V max voltage & 7A current capacity FNIRSI FNB58 USB Tester, PD/QC, USB-C E-Marker Reader, 28V 7A, USB-A/C **Brand:** fnirsi **Price:** S$107 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your USB game with precision and speed! ## 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?** S$107 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/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 - • **Data-Driven Insights:** Records capacity, startup time, and waveform data with app/PC software support for professional-level analysis. - • **Precision Power Metrics:** Accurately monitors voltage, current, power, resistance, and ripple for in-depth USB diagnostics. - • **Smart Cable Intelligence:** Reads USB-C E-Marker chips to reveal cable capabilities, ensuring you never undersell your high-end cables. - • **Fast Charge Protocol Mastery:** Automatically detects and triggers major fast charging standards including PD, QC, VOOC, and more. - • **Universal Multi-Port Compatibility:** Integrated USB-A, Micro-USB, and USB-C ports cover all your device testing needs seamlessly. ## Overview The FNIRSI FNB58 USB Tester is a professional-grade diagnostic tool designed for tech-savvy users and professionals. Featuring a vivid 2.0-inch TFT LCD, it supports voltage up to 28V and current up to 7A, with multi-port USB-A, Micro-USB, and USB-C interfaces. It excels in fast charge protocol detection and triggering (PD2.0/3.0, QC2.0/3.0, VOOC, and more), cable E-Marker chip reading, and detailed power quality analysis including ripple and resistance measurement. With app and PC software integration, it offers comprehensive data logging and waveform visualization, making it indispensable for optimizing and troubleshooting USB charging setups. ## 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 | #24,783 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #17 in Voltage Testers | | Brand | FNIRSI | | 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 out of 5 stars 541 Reviews | | Included Components | USB Tester | | Item Highlight | PD2.0/3.0 & QC2.0/3.0, Voltage/Current/Power Monitoring, Real-Time Graphs, Capacity, Ripple, PD Trigger, App/PC Software | | Item Weight | 1.6 ounces | | Manufacturer | FNIRSI | | Measurement Type | Voltage, Current, Fast Charge Detection, Etc | | Min. Operating Voltage | 4 | | 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 | FNB58 | | 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/71VDjC5CdjL.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/71l+PaEZJIL.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/81iASFnmbVL.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/81IutHHhGqL.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/81boqTui7vL.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.sg/products/497340792-fnirsi-fnb58-usb-tester-pd-qc-usb-c-e-marker](https://www.desertcart.sg/products/497340792-fnirsi-fnb58-usb-tester-pd-qc-usb-c-e-marker) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-09-26*