You connect an external CD or DVD drive through a USB-C hub.

Nothing happens.

Or the drive lights up, opens its tray, and then disappears as soon as you insert a disc.

Sometimes the same drive works perfectly when connected directly to the laptop.

And if the device is an Apple USB SuperDrive, it may fail through the hub even though other USB accessories work normally.

These symptoms look similar, but they do not have the same cause.

The fastest way to troubleshoot them is to answer one question first:

Are you using an Apple USB SuperDrive or a standard third-party USB optical drive?

That single distinction determines the rest of the troubleshooting path.

Start Here: Which Optical Drive Do You Have?

Use this split before changing cables, drivers, or power settings.

Do not treat all four as ordinary low-power USB accessories.

Optical drives contain a motor, disc-loading mechanism, laser assembly, and controller electronics. A setup that provides enough power for the drive to sit idle may become unstable once the disc begins spinning.

Branch A: You Are Using an Apple USB SuperDrive

This branch is simpler than many users expect.

Apple's own USB SuperDrive connection guidance says to connect the drive to a USB-A port on the Mac, or use supported Apple USB-C adapters when the Mac has Thunderbolt or USB-C. Apple also specifically states that if the SuperDrive does not respond through an external display or USB hub, connect it directly to a USB port on the Mac.

That means:

A SuperDrive working directly but failing through a USB-C hub does not automatically mean the hub's USB ports are defective.

The SuperDrive has its own compatibility requirements.

This is especially important because many LENTION hub specifications also explicitly state:

Not for Apple SuperDrive.

So if your connection is:

Mac → USB-C Hub → Apple SuperDrive

and it fails while ordinary flash drives, keyboards, or mice work through the same hub, do not continue troubleshooting it as a generic USB-port failure.

Instead test:

Mac → Supported USB-C-to-USB Adapter → SuperDrive

or another connection method listed by Apple.

What If the SuperDrive Has Power but Still Does Not Appear?

Do not use the LED or tray mechanism as proof of full compatibility.

There are two separate requirements:

Power

and:

USB device communication

A device can receive enough electrical power to respond physically while still failing to enumerate correctly through the hub.

So:

Drive light = On

does not necessarily mean:

macOS recognized the SuperDrive.

Likewise:

Tray opens

does not prove that disc communication will work correctly.

With Apple SuperDrive, the direct-connection test has much higher diagnostic value than repeatedly switching USB ports on the same hub.

Branch B: You Have a Standard USB Optical Drive

A normal third-party USB DVD or CD drive needs a different test.

Instead of asking only:

“Does the drive appear?”

watch what happens at three different moments:

Idle

→ Tray / Insert Disc

→ Disc Spin

This creates a useful behavior fingerprint.

Stage 1 — Nothing Happens at All

You connect the optical drive and get:

No LED

No tray

No motor sound

No Windows/macOS detection

Start with the physical path.

Check:

Laptop → USB-C Hub → USB Data Port → Optical Drive

Make sure the optical drive is connected to a real USB data port.

Do not plug it into a USB-C port labeled only:

PD

Power Delivery

Charging

or:

100W

A charging input may look like an ordinary USB-C connector but provide no peripheral data connection.

If you're unsure about these different port roles, the LENTION guide explaining why HDMI can work while the USB ports on a USB-C hub do not covers the separation between USB data, charging, and video paths.

Stage 2 — The Drive Powers On but Does Not Appear

Now suppose:

LED = On

Tray = Works

but:

Finder / File Explorer = No drive

The drive clearly receives some power.

That does not yet prove the USB data path is healthy.

Perform the most important comparison in this article:

Test 1

Laptop → Optical Drive Direct

Test 2

Laptop → USB-C Hub → Optical Drive

If the drive is missing in both configurations, focus on:

• optical drive;
• drive cable;
• operating system;
• device compatibility.

If it works directly but disappears behind the hub, focus on:

• hub compatibility;
• power available to the peripheral;
• USB port type;
• adapter chains.

This is the same basic isolation principle used for other USB devices that appear directly but disappear through a USB-C hub.

Stage 3 — It Appears Until You Insert a Disc

This is the most useful power clue.

Suppose the sequence looks like this:

Connect drive → detected

Open tray → still detected

Insert disc → motor starts

Drive disconnects

or:

disc never spins up

Now power becomes much more important.

ASUS's official external optical-drive troubleshooting guidance notes that some external optical drives may not receive enough power from one USB connection and may require the additional power connector on a USB Y-cable. ASUS also recommends testing the optical drive directly on the computer rather than through hubs or extension cables when diagnosing recognition problems.

So if failure begins specifically when the disc starts spinning:

Treat the spin-up event as a power test.

It is more informative than simply asking whether the drive's LED is illuminated.

If Your Optical Drive Uses a USB Y-Cable, Use It Correctly

Some external optical drives include a Y-shaped cable.

One branch carries the main:

USB data + power

while the second connector can provide:

additional power

depending on the drive design.

Do not leave the additional power connector unplugged if the manufacturer's instructions require it.

And do not assume that putting both plugs into two ports on the same small bus-powered hub automatically creates unlimited power.

Follow the optical-drive manufacturer's instructions for that specific cable.

If possible, compare:

Y-cable correctly connected directly to the computer

against:

Y-cable connected through the hub.

If only the direct configuration works, you have identified a connection or power-compatibility boundary.

Remove Other Bus-Powered Devices Before Testing

An optical drive should not be diagnosed while the hub is simultaneously powering:

portable SSD

phone

webcam

hard drive

and:

optical drive

Disconnect everything except:

Laptop

Hub

Optical Drive

Then retest.

This matters because USB devices connected behind the same hub share the available connection resources.

If macOS actually displays an USB Accessories Disabled or similar power warning, use the dedicated guide for Mac USB accessories being disabled through a USB-C hub.

That is stronger evidence of a USB power-budget problem than simply seeing an optical drive fail to mount.

Does Adding PD Power to the Hub Help?

Sometimes—but do not misunderstand what PD does.

A compatible hub with a PD input may use external charger power to:

• charge the laptop;
• operate the hub controller;
• improve the available power margin for connected peripherals.

For a generic optical drive, that may make a marginal setup more stable if the hub is designed to provide additional peripheral power.

But:

100W PD does not mean a USB device receives 100W.

And:

PD power cannot turn an incompatible Apple SuperDrive connection into a supported one.

Those are separate questions:

Power availability

versus:

device compatibility

This distinction is essential.

A Powered Hub Is Not Automatically an Optical-Drive Hub

Do not choose a USB-C hub based only on:

100W PD

many USB ports

or:

USB 3.0

Check the product specification for the exact peripheral.

Look for wording such as:

supports external optical drives

or:

provides additional power to USB peripherals

and also check for exclusions such as:

Not compatible with Apple SuperDrive.

The last line is especially important.

A hub may be perfectly suitable for:

generic DVD drives

while explicitly excluding:

Apple USB SuperDrive.

That is not a contradiction.

They are different compatibility cases.

Windows: Does the Drive Exist in Device Manager?

If the generic optical drive remains connected and powered but does not appear in File Explorer, open:

Device Manager

and look under:

DVD/CD-ROM drives

and:

Universal Serial Bus controllers

There are three useful outcomes.

The DVD/CD-ROM Drive Appears Normally

USB detection is working.

Now investigate:

• disc compatibility;
• damaged media;
• application support;
• mounting behavior.

The Drive Appears With an Error

The device is reaching Windows, but there may be a driver or device-state issue.

The Drive Never Appears

Go back toward:

USB data connection

power

cable

and:

hub compatibility

before modifying Windows settings.

This prevents a common troubleshooting mistake: attempting software fixes for hardware that never successfully enumerated.

macOS: Check Whether the Mac Sees the USB Device

On a Mac, open:

Apple menu → System Settings → General → About → System Report

Then inspect:

USB

If the third-party optical drive appears in the USB device tree but Finder does not show a disc, the problem has moved beyond basic USB detection.

If the drive disappears from the USB tree only when connected through the hub, return to:

power

USB path

and:

compatibility.

For Apple SuperDrive specifically, however, follow Apple's direct-connection guidance rather than treating System Report as proof that any hub configuration should work.

Do Not Add Another Hub or Extension Cable

Avoid troubleshooting this configuration:

Laptop → USB-C Hub → USB Extension → Second Hub → Optical Drive

Every added layer makes it harder to distinguish:

power loss

from:

USB enumeration

from:

device compatibility.

The LENTION guide on daisy-chaining USB-C hubs similarly recommends connecting higher-demand devices such as optical drives directly whenever possible.

For diagnosis, use the shortest path you can.

Read the Optical Drive's Behavior, Not Just Its LED

Use this result table:

This is much more precise than saying:

“My USB hub won't detect my DVD drive.”

Quick Answers

Why does my USB optical drive work directly but not through a USB-C hub?

The hub adds another layer between the drive and host. Power availability, USB data routing, or device-specific compatibility can change even if the optical drive itself is healthy.

Why does my DVD drive light up but not appear?

The drive may be receiving power without successfully completing USB device communication. Power and enumeration are separate requirements.

Why does the optical drive disconnect when I insert a disc?

If it remains stable while idle but fails when the disc begins spinning, insufficient or unstable peripheral power is one possibility worth testing.

Can Power Delivery fix an optical drive that is not detected?

It can improve the available power margin on compatible hubs, but it does not fix every compatibility problem.

Can I use Apple USB SuperDrive through any USB-C hub?

No. Apple says that if SuperDrive does not respond through a USB hub, connect it directly to the Mac using a supported connection method.

Is Apple SuperDrive the same as a normal USB DVD drive?

No. Treat SuperDrive as its own compatibility case rather than assuming that behavior from a generic USB optical drive applies to it.

Final Takeaway

When an optical drive is not detected through a USB-C hub, begin with the drive type, not the operating system.

If it is an:

Apple USB SuperDrive

follow Apple's supported connection path and do not assume ordinary USB hubs are compatible.

If it is a:

generic USB optical drive

watch what happens at three moments:

Idle

→ Tray

→ Disc Spin

Then compare:

Direct Connection

against:

Hub Connection

The key rules are:

A drive that receives power is not necessarily completing USB data communication.

A generic optical drive that fails only when the disc spins may be exposing a power limitation.

Apple SuperDrive compatibility should be treated separately from normal USB optical-drive power troubleshooting.

Once you separate drive identity, power behavior, and USB detection, an apparently random “DVD drive not detected through hub” problem becomes much easier to diagnose.