PlugScope

USB & Thunderbolt at a glance

Only for Mac

Free · In-App Purchases

Mac

See every USB and Thunderbolt device at a glance — power budgets, link speeds, and disk throughput, right from your menu bar. PlugScope is a lightweight menu-bar utility that maps and explains your Mac's USB and Thunderbolt topology — buses, hubs, devices, link speeds, power budgets, live disk throughput, and attached storage — in one clean, glanceable view. WHY PLUGSCOPE Modern Macs run a lot over a few ports: docks, SSDs, audio interfaces, cameras, card readers, displays. When something misbehaves — a drive that keeps dropping, a hub that can't power everything, a cable that quietly negotiates a slower link — the cause is usually invisible. PlugScope surfaces it. FEATURES • USB topology — host controllers, hubs, and devices in a grouped, collapsible list. • Power budget meter — a colour-coded bar (green → yellow → red) showing each device's draw against the available budget, with used / budget mA and percentage. • Power alerts — over-budget hubs and underpowered devices are flagged before they cause disconnects. • Degraded-link detection — spots devices capable of a faster link than they actually negotiated (e.g. a 20 Gb/s SSD linked at 480 Mb/s), so you can check the cable or port. • Disk throughput — read/write rates for storage devices, sampled from IOKit, with an optional throughput-over-time graph. • Thunderbolt / USB4 — per-bus status, link speed, mode (TB3/TB4/USB4), LC version, switch UID/version, and vendor/device IDs. • Dashboard summary — device count, total power draw, fastest USB and Thunderbolt links, and a per-type breakdown. • Human-readable storage — disk, size, SMART status, partition scheme, and per-volume detail. • Role classification — devices tagged by role (storage, audio, input, camera, network, and more). • Menu-bar native — left-click for the popover, right-click for options; pin it open, toggle graphs, show hubs and buses, and launch at login. PRIVACY PlugScope reads device information locally via the system profiler and IOKit. Nothing is uploaded, and there are no accounts, ads, or trackers. Note: macOS exposes no per-device byte counters for USB/Thunderbolt traffic itself, so throughput reflects disk read/write activity, not raw bus traffic.

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Maintenance update. • Added a version and build number to the General settings tab • Fixed the unlock screen not closing after a successful purchase • Full Access now unlocks reliably via purchase or Restore Purchase

Version 1.0.1

The developer, GITC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

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    • Supported Features

      • Dark Interface

    Information

    Provider
    Greenwood IT Consultancy Limited
    Size
    2 MB
    Category
    Utilities
    Compatibility
    Requires macOS 15.5 or later.
    • Mac
      Requires macOS 15.5 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Greenwood IT Consultancy Ltd
  • Developer Website
  • Privacy Policy

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