Roku 3940CA Express 4K User Guide
- June 7, 2024
- Roku
Table of Contents
Quick Start Guide
3940CA
What’s included
Details
Installation
STEP 1: Connect to TV
Connect your streaming player to an HDMI port on the back of your TV with the
included cable. For 4K streaming, you’ll need to use an HDMI port that
supports HDCP 2.2.
TIP:
For help setting up your device, visit
go.roku.com/express4k
STEP 2: Connect to power
For the best streaming experience, use the included USB power cable and power
adaptor to connect your streaming player to a wall outlet. Or use the included
USB power cable to connect to the USB port on your TV.
NOTE: See a red light on your streaming player?
That means the USB port on your TV is not providing enough power. Use the
included power adaptor instead.
STEP 3: Position streaming player
Place your streaming player near your TV or attach it with the included
removable adhesive strip.
DO NOT place your streaming player behind the TV or inside a closed TV
cabinet. Doing so may cause overheating.
DO
Make sure that the front of your streaming player has a direct line of sight
to your remote control.
OPTIONAL
To attach your streaming player to your TV, see the adhesive strip
instructions on the back page of this guide.
STEP 4: Power on TV and select input
Use your TV remote to power on your TV and select the input (source) you used
to connect your streaming player.
STEP 5: Insert batteries
Slide open the cover on the back of your remote and insert the included
Duracell® batteries.
STEP 6: Follow the on-screen setup
Follow the instructions on your TV screen.
Activate your streaming player by using your computer or smartphone to link to
a Roku account.
IMPORTANT:
Roku does not charge for activation support – beware of scams.
Common questions
Why do I need to create a Roku account?
You’ll need a Roku account to stream, add channels, easily manage
subscriptions, rent movies, and more.
Why do I need to enter a credit card?
Saving a payment method makes it easy to rent or buy movies, subscribe to
popular channels, and start free trials in just a click. No charges will be
made without your authorization.
What should I do if my streaming player is not connecting to my wireless
network?
Double-check the network you selected and that you entered your password
correctly. If you have other devices connected to this network, your streaming
player should connect.
Visitgo.roku.com/express4K for more
information
Adhesive strip instructions
Use this removable strip if you want to attach your streaming player to your
TV. Keep in mind that this strip can only be used once and your streaming
player requires a direct line of sight to your remote control.
To apply adhesive strip
| 
| 
---|---|---
1. Choose a flat, clean surface in line of sight to your remote.| 2. Remove
striped liner and press
adhesive to the bottom of
your player.| 3. Remove other liner and hold
your player in position for 30
seconds.
To remove the adhesive strip
| 
| 
---|---|---
Gently pull the adhesive strip
sideways.| Do not pull adhesive strip
towards you.| Stretch the strip slowly to
release.
| Need
more help?
support.roku.com
---|---
| Getting
the most out of your
Roku streaming player.
go.roku.com/usingroku
| See what’s
streaming for free, tips, and more
blog.roku.com
© 2021 Roku, Inc. All rights reserved. Roku and the Roku logo are the registered trademarks of Roku, Inc. HDMI, the HDMI logo, and High-Definition Multimedia Interface are the trademarks or registered trademarks of HDMI Licensing, LLC. All other logos and trademarks herein not owned by Roku, Inc. are the property of their respective owners.
References
- Roku
- Getting to know your Roku Express 4K or Express 4K+|Learn about Express 4K/4K+
- Channels & Viewing Help | Official Roku Support
- Roku