iUSBDebugger

Description

iUSBDebugger is a USB hardware diagnostic tool for macOS. It brings USB device enumeration, USB-C cable capability, USB Power Delivery identity and Thunderbolt / USB4 topology together in one window — built for repair, lab and hardware validation work. Everything is read from the native macOS IOKit registry. The Mac App Store build is strictly read-only: it inspects and displays topology and port status, and never changes device state. USB-C PORT STATE For every built-in USB-C port: what it supports, what it negotiated with the attached device, and what is actually carrying data. When a transport was agreed and never activated, the link failed to train — the reason a device can enumerate perfectly and still run far below its rated speed. Also plug orientation, cable flags, DisplayPort pin assignment, and running counts of plug events, connections and overcurrent faults. USB-C CABLE IDENTITY Reads the cable's E-Marker (EMCA) chip to distinguish passive, active and optically isolated cables, and reports rated current, supported USB data rates and connector type. USB POWER DELIVERY Identifies chargers, docks and peripherals from their Power Delivery identity, and lists the advertised voltage and current pairs — so you can tell whether a cable or supply actually meets what a device is asking for. DEBUG READINESS For a selected iPhone or Android phone: whether Xcode, Finder or adb can reach it over USB right now. Checks the debug channel (usbmux or ADB), link speed and hub path, and offers copy-ready diagnostic commands. Still read-only — the scorecard never opens or seizes the device. APPLE MOBILE DEVICES Detects connected iPhone and iPad hardware THUNDERBOLT / USB4 Shows Thunderbolt and USB4 port topology and link bandwidth, read directly from the native IOKit registry. USB HUB INSPECTION Discovers connected hubs and reads their hub descriptors, including the XHCI root hubs behind Thunderbolt and USB4 docks. Reports per-port power, connection, enabled and overcurrent status, along with the hub's power switching mode — per-port, ganged or unsupported. When the macOS kernel driver holds exclusive access and the descriptor cannot be read, details fall back to the IOKit registry instead of failing. Supports both USB 2.0 (descriptor 0x29) and USB 3.0 (descriptor 0x2A) hubs. SYSTEM LOG PER DEVICE Select a controller, hub or device and read the macOS system log for just that selection, matched by USB location ID so a controller covers its whole bus and a hub covers every downstream port. Attach, detach, port power, I/O error, reset and link events are classified, with failure codes badged. macOS does not allow App Store apps to read the system log directly, so the app shows you the one command that exports it and opens the file you save; nothing is uploaded, and it can read no file other than the one you choose. FULL DEVICE TREE The complete USB device tree with host controller diagnostics. The interface is available in English and Simplified Chinese, and follows your system language. Requires macOS 14.0 or later. A note on what the hardware can tell us: some details depend on what the connected device reports. Cables without an E-Marker chip cannot supply electronic identity data, and some devices expose only a limited set of fields on certain macOS versions.

• DFU port (this Mac) — Shows Apple’s published revive/restore USB-C location for your Mac model, with cable rules. Helps you pick the right port when recovering an Apple device. No invented PortNumber ↔ DFU mapping. • Full PDOs / PD contract + DP Alt Mode — Advertised power options and the winning contract from IORegistry, plus DisplayPort Alt Mode Supported / Provisioned / Active (lanes/rate when published). Empty when macOS has not published a power source. • Android USB Protection coach — Charge-only / lock-screen USB Protection unlock + reconnect guidance from interface descriptors; short tip only for ADB over Wi‑Fi (no pairing UI). • Accessibility IDs — Stable iusb.* identifiers so automation and AI tools can drive USB inspection UI. Still 100% local and read-only. No accounts, no cloud.

Information

Seller

Liang Cheng

Category

Developer Tools

Version

1.9.0

Requires

iOS 14.0+

Size

2.2 MB

Age Rating

4+