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Mac USB Ports not working – How to Fix It 2026 Guide

Why Choose Keith Thomas

20 years of experience as a Senior Apple Support Specialist at Apple Computer UK HQ.

• Former Apple Computer UK Mac Support Specialist and Apple Authorised Service Provider background.

Established and Independent since 2010 for on‑site Apple Support Service – no call centres, no outsourcing, no hardware repairs. Over 25,000+ Apple problems resolved. Unique on-site Apple Support Service. backed up with Independent Apple Telephone Support Assistance.

• Trusted by home users, small businesses, and professionals across London and the South East UK.• Clear, honest, software‑only support. No Hardware Repairs. Expert Apple Consultancy Service.

On‑site Apple Mac Support in London and the South East UK

What this page covers

Why Mac USB ports fail, steps to fix, and when to get on‑site help.

• MacBook Air • MacBook Pro • iMac • Mac mini • Mac Studio

If devices aren’t recognised or USB‑C stops responding, this page is for you.

Common reasons

• Faulty cables/devices • Insufficient power • macOS config errors • Damaged files • Update issues • Hub/adapter faults • Hardware port failure

Quick checks

Restart Mac • Try another port • Swap cable • Finder → Settings → Sidebar → tick “External disks”

If drives not recognised

• Power issues • Bad cable/adapter • Config errors

Fix: powered hub, new cable, restart

If USB‑C fails

• Hub/adapter fault • Config errors • Power delivery

Fix: direct connect, restart, new cable

If devices disconnect randomly

• Faulty cable • Power issues • macOS corruption

Fix: new cable, restart, update macOS

When DIY stops working

Seek help if ports fail completely, drives never appear, hubs fail, reinstall doesn’t fix, or data must be preserved.

Requires: USB config repair, macOS recovery, safe reinstall, account repair, hardware diagnostics.

On‑Site Apple Mac Support – London & South East UK

Service across Central, West, North, South, East London, Surrey, Berkshire, Hampshire, Wiltshire.

Specialist in: USB issues, config repair, safe recovery, reinstall, iCloud/Apple ID, new Mac setup, hardware diagnostics.

Book on‑site help

Keith Thomas – Apple Mac Support Specialist

Established 2010 – Open 09:30–20:30, 7 Days

Contact Keith Thomas by Telephone: 07800 940756 or by Text to: 07800 940756, or simply complete an online website contact form 24/7