How does USB device discovery work?

Ben Eater November 2, 2021
Video Thumbnail
Ben Eater Logo

Ben Eater

View Channel

About

Subscribe to see tutorial-style videos about electronics, computer architecture, networking, and various other technical subjects. If you want to see more on a particular subject, leave a comment and I'll try my best to add more. If you'd like to support my work, please do! https://www.patreon.com/beneater https://paypal.me/beneater https://cash.me/$eater bitcoin:1EaterJkmmuJWfm8hvULrMJGm7R8JgXTL8 bitcoincash:1JUjEErUjkgBVJP28GH6LKihvEUJ1RGZhx

USB Troubleshooting Kit

AI-recommended products based on this video

Loading...
USB C Hub, MacBook Pro Adapter USB C Dongle with 4K HDMI,Thunderbolt 3 100W Power Delivery Port,USB C 5Gbps Data Port,SD/TF Card Reader,2 USB 3.0 Ports Compatible for MacBook Pro Air 2022/2021/2020

USB C Hub, MacBook Pro Adapter USB C Dongle with 4K HDMI,Thunderbolt 3 100W Power Delivery Port,USB C 5Gbps Data Port,SD/TF Card Reader,2 USB 3.0 Ports Compatible for MacBook Pro Air 2022/2021/2020

(4,449)
$25.99
FREE delivery Sat, Jun 14 on your first order
100+ bought in past month
Loading...
Razer Universal Quick Charging Stand for Xbox Series X|S: Magnetic Secure Charging - Matches Forza Horizon 5 Limited Edition Xbox Wireless Controller - USB Powered - (Controller Sold Separately)

Razer Universal Quick Charging Stand for Xbox Series X|S: Magnetic Secure Charging - Matches Forza Horizon 5 Limited Edition Xbox Wireless Controller - USB Powered - (Controller Sold Separately)

(1,103)
$52.27$33.70
PrimeFREE delivery Sat, Jun 14
Loading...
FYOUNG Controller Charger Dock Compatible with Nintendo Switch/Switch OLED for Joycons, Charging Stand Station Compatible with Switch/OLED Controller Accessories with a USB Type-C Charging Cord
Best Seller

FYOUNG Controller Charger Dock Compatible with Nintendo Switch/Switch OLED for Joycons, Charging Stand Station Compatible with Switch/OLED Controller Accessories with a USB Type-C Charging Cord

(8,757)
$15.95
400+ bought in past month
Loading...
2 Pack Controller Battery Pack Rechargeable for Xbox One/Xbox Series X|S with 4 Battery Cover Xbox Play and Charge Kit with Micro USB Charging Cable for Xbox One S/X/Elite Controller

2 Pack Controller Battery Pack Rechargeable for Xbox One/Xbox Series X|S with 4 Battery Cover Xbox Play and Charge Kit with Micro USB Charging Cable for Xbox One S/X/Elite Controller

(355)
$36.99
FREE delivery Sun, Aug 24
Loading...
2 Pack Rechargeable Controller Battery Pack for Xbox Series X|S and Xbox One with 10FT USB C Charging Cable and Micro USB Adapter 6amLifestyle Battery Pack Xbox Play and Charge Kit

2 Pack Rechargeable Controller Battery Pack for Xbox Series X|S and Xbox One with 10FT USB C Charging Cable and Micro USB Adapter 6amLifestyle Battery Pack Xbox Play and Charge Kit

(4,379)
$34.99
FREE delivery Sun, Jun 15 on your first order
Loading...
Shcngqio 1080P Full HD Webcam with Privacy Cover, Wide Angle Lens, Active Light Correction, Plug and Play USB Webcam for PC, Desktop,Laptop (Black)

Shcngqio 1080P Full HD Webcam with Privacy Cover, Wide Angle Lens, Active Light Correction, Plug and Play USB Webcam for PC, Desktop,Laptop (Black)

(205)
$28.99
Prime
500+ bought in past month
Loading...
LyxPro SPA-8 Compact 8" Portable PA System 100-Watt RMS Power Active Speaker System Equalizer Bluetooth SD Slot USB MP3 XLR 1/4" 1/8" 3.5mm Inputs

LyxPro SPA-8 Compact 8" Portable PA System 100-Watt RMS Power Active Speaker System Equalizer Bluetooth SD Slot USB MP3 XLR 1/4" 1/8" 3.5mm Inputs

(2,275)
$159.99
Loading...
iPhone 16e/16/15 Pro Max Charger, 2-Pack 20W Type C Fast Wall Charger Plug Power Adapter, USB C Charger Block for iPhone 16/16e/16 Pro/16 Pro Max/15/15 Plus/15 Pro Max, iPad, with 6FT USB-C to C Cable

iPhone 16e/16/15 Pro Max Charger, 2-Pack 20W Type C Fast Wall Charger Plug Power Adapter, USB C Charger Block for iPhone 16/16e/16 Pro/16 Pro Max/15/15 Plus/15 Pro Max, iPad, with 6FT USB-C to C Cable

(4,666)
$19.99
FREE delivery Sat, Jun 14 on your first order
1K+ bought in past month
Loading...
IFEART 70W USB C Charger for MacBook Air MacBook Pro 13 14 15 16 inch 2025 2024 2023 2022 2021 2020 2019 2018, M1 M2 M3 M4 Laptop USB C Power Adapter, 6.6ft USB C to C Cable, Original Quality
Best Seller

IFEART 70W USB C Charger for MacBook Air MacBook Pro 13 14 15 16 inch 2025 2024 2023 2022 2021 2020 2019 2018, M1 M2 M3 M4 Laptop USB C Power Adapter, 6.6ft USB C to C Cable, Original Quality

(4,167)
$29.99
FREE delivery Sat, Jun 14 on your first order
1K+ bought in past month
Loading...
VINTAR South Africa Plug Adapter,VINTAR Type M Power Adapter with 1 USB C,2 American Outlets and 3 USB Ports,6 in 1 International Power Adapter for Canada to South Africa,Botswana,Namibia,Nepal(Type M)

VINTAR South Africa Plug Adapter,VINTAR Type M Power Adapter with 1 USB C,2 American Outlets and 3 USB Ports,6 in 1 International Power Adapter for Canada to South Africa,Botswana,Namibia,Nepal(Type M)

(2,588)
$22.99
FREE delivery Sat, Jun 14 on your first order
Loading...
USBC Charger Block for iPhone 16 Charging Plug,MFI Certified Fast USB C Wall Cube 2Pack Power Adapter for iPhone 15/16 Pro/Plus/Pro Max/14/13/12/11,for iPad Air/Mini USB-C Charge Brick Box

USBC Charger Block for iPhone 16 Charging Plug,MFI Certified Fast USB C Wall Cube 2Pack Power Adapter for iPhone 15/16 Pro/Plus/Pro Max/14/13/12/11,for iPad Air/Mini USB-C Charge Brick Box

(6,878)
$13.99
FREE delivery Wed, Aug 20 on your first order
5K+ bought in past month
Loading...
Anker USB C Charger Cable (6ft 100W, 2Pack), USB 2.0 Type C Fast Charging Cable for iPhone 15 / 15Pro / 15Plus / 15ProMax MacBook Pro 2020, iPad Pro 2020, iPad Air 4, Samsung Galaxy S23+/S23 Ultra ClimatePartner certified

Anker USB C Charger Cable (6ft 100W, 2Pack), USB 2.0 Type C Fast Charging Cable for iPhone 15 / 15Pro / 15Plus / 15ProMax MacBook Pro 2020, iPad Pro 2020, iPad Air 4, Samsung Galaxy S23+/S23 Ultra ClimatePartner certified

(44,904)
$17.99
FREE delivery Wed, Aug 20 on your first order
6K+ bought in past month
Loading...
Short USB C Cable [4-Pack 8 inch], SUMPK 3A Fast Charging USB 2.0 Data Transfer to Type C Phone Charger Cord Nylon Braided Compatible with Samsung Galaxy S10 S9, Pixel 3, LG V30, Charging Station

Short USB C Cable [4-Pack 8 inch], SUMPK 3A Fast Charging USB 2.0 Data Transfer to Type C Phone Charger Cord Nylon Braided Compatible with Samsung Galaxy S10 S9, Pixel 3, LG V30, Charging Station

(1,702)
$11.99
FREE delivery Tue, Jun 17 on your first order
Loading...
Lenovo USA ThinkPad Thunderbolt 3 Dock Gen 2 135W (40AN0135US) Dual UHD 4K Display Capability, 2 HDMI, 2 DP, USB-C, USB 3.1, Black

Lenovo USA ThinkPad Thunderbolt 3 Dock Gen 2 135W (40AN0135US) Dual UHD 4K Display Capability, 2 HDMI, 2 DP, USB-C, USB 3.1, Black

(1,458)
$279.55$169.24
FREE delivery Tue, Jun 17
Loading...
Lenovo 65w USB Type C Ac Adapter 4X20M26268 with 2 Prong Power Cord Included, Black in The Original Retail Packaging.

Lenovo 65w USB Type C Ac Adapter 4X20M26268 with 2 Prong Power Cord Included, Black in The Original Retail Packaging.

(969)
$47.27$41.19
Prime$6.17 delivery Wed, Jun 18Only 9 left in stock.
50+ bought in past month
Loading...
Syntech Link Cable Compatible with Meta/Oculus Quest 3S/Quest 3/Quest2/Pro/Pico 4/Ultra and PC/SteamVR, 16FT Upgraded Type C Cable with USB 3.0 Adapter, High Speed Data Transfer Cord for VR Headset
Best Seller

Syntech Link Cable Compatible with Meta/Oculus Quest 3S/Quest 3/Quest2/Pro/Pico 4/Ultra and PC/SteamVR, 16FT Upgraded Type C Cable with USB 3.0 Adapter, High Speed Data Transfer Cord for VR Headset

(1,405)
$26.99
FREE delivery Tue, Jun 17 on your first order
100+ bought in past month
Loading...
USB C Headphone Adapter iPhone 16 Dongle Type C to 3.5mm Jack Audio Adapter iPhone 15 USBC to Aux Adapter Compatible with iPhone16, iPhone 15, MacBook Pro/Air, Chromebook, Galaxy 2 Pack

USB C Headphone Adapter iPhone 16 Dongle Type C to 3.5mm Jack Audio Adapter iPhone 15 USBC to Aux Adapter Compatible with iPhone16, iPhone 15, MacBook Pro/Air, Chromebook, Galaxy 2 Pack

(249)
$11.99
FREE delivery Sat, Jun 14 on your first order
300+ bought in past month
Loading...
USB C Charger Block, 40W Dual USB C Wall Charger PD+QC USB Wall Plug Multiport Type C Power Adapter Fast Charging Block for iPhone 15 14 13 12 iPad Galaxy S23 S22 Pixel LG Tablet Android

USB C Charger Block, 40W Dual USB C Wall Charger PD+QC USB Wall Plug Multiport Type C Power Adapter Fast Charging Block for iPhone 15 14 13 12 iPad Galaxy S23 S22 Pixel LG Tablet Android

(9,415)
$15.99
FREE delivery Sat, Sep 20 on your first order
5K+ bought in past month
Loading...
UGREEN Revodok USB C Hub, 5-in-1 USB C Adapter with 4K HDMI, 100W Power Delivery, 3 USB A Data Ports, Multiport USB Hub for MacBook Pro/Air, iPad Pro, Surface, XPS, Thinkpad, Galaxy and More, Gray
Best Seller

UGREEN Revodok USB C Hub, 5-in-1 USB C Adapter with 4K HDMI, 100W Power Delivery, 3 USB A Data Ports, Multiport USB Hub for MacBook Pro/Air, iPad Pro, Surface, XPS, Thinkpad, Galaxy and More, Gray

(17,667)
$19.99
3K+ bought in past month
Loading...
USB C Hub, MacBook Pro Adapter USB C Dongle with 4K HDMI,Thunderbolt 3 100W Power Delivery Port,USB C 5Gbps Data Port,SD/TF Card Reader,2 USB 3.0 Ports Compatible for MacBook Pro Air 2022/2021/2020

USB C Hub, MacBook Pro Adapter USB C Dongle with 4K HDMI,Thunderbolt 3 100W Power Delivery Port,USB C 5Gbps Data Port,SD/TF Card Reader,2 USB 3.0 Ports Compatible for MacBook Pro Air 2022/2021/2020

(4,449)
$25.99
FREE delivery Sat, Jun 14 on your first order
100+ bought in past month