Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Keras is a Python API for building and training deep-learning models. To get started, install Keras and one supported backend—JAX, TensorFlow, or PyTorch—choose that backend before importing Keras, then train a small model end to end. A simple image-classification example is a good first project; after that, learn the Sequential API and expand to more flexible model structures as needed.
What Keras does—and what a backend does
Keras provides the interface for defining, training, evaluating, and saving deep-learning models. It relies on a backend framework to perform the underlying computation. Keras 3 supports JAX, TensorFlow, and PyTorch as backends; the setup guide explains the current requirements and configuration options at Getting started with Keras.
For a first project, choose one backend rather than trying to learn all three at once. If you already use one of these frameworks, starting with it can simplify your environment and make it easier to follow related tutorials. There is no single backend established as best for every beginner or project; consider the framework your project depends on, the tutorial you plan to use, and compatibility with your environment.
Install Keras and configure a backend
Use a clean Python environment and follow the current Keras installation instructions. The documented PyPI command is pip install --upgrade keras, and Keras also requires a backend framework. Package compatibility details can change, so check the official setup page rather than combining install commands copied from older tutorials.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Set the backend before importing Keras. For example, set KERAS_BACKEND to tensorflow, jax, or torch in your environment, then start Python and import Keras. The backend cannot be switched after Keras has been imported in that process.
Older instructions may describe a different Keras version: the Keras installation page says TensorFlow 2.16 and later install Keras 3 by default, while TensorFlow 2.15 installs Keras 2. It also documents tf_keras as the legacy package option. Check the live compatibility guidance for the package combination you intend to use.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Build a first model with a complete example
A useful first exercise is the official Keras introduction for engineers, which trains a convolutional neural network to classify MNIST handwritten-digit images. It takes you through a complete task rather than stopping at a model definition, and the example is designed to work with JAX, TensorFlow, or PyTorch once you have selected a backend: Introduction to Keras for engineers.
As you work through it, focus on the sequence of tasks: prepare the data, define the model, train it, and evaluate its results. That sequence is more valuable at first than trying to understand every layer type or optimization choice. Run the notebook or code as written before changing the architecture; then adjust one part at a time so you can see how each change affects the workflow.
Windows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallCrashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteRank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
If you prefer a hosted notebook, TensorFlow says its tutorials can run directly in Colab without local setup. Keras also notes that many of its guides are available as notebooks that run there. See TensorFlow tutorials and the Keras developer guides.
Choose a model-building API
Sequential: a straightforward stack
Start with the Sequential API when a model is a simple linear stack of layers, with one layer feeding into the next. TensorFlow’s beginner tutorials recommend beginning here because it offers a direct way to express that structure. Learn how to define the stack, compile the model, and use the training workflow before moving on to more flexible designs.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Functional API: connected or branching models
Use the Functional API when a model needs a structure beyond a simple stack—for example, branches or multiple inputs and outputs. The Keras guide collection includes material on Functional models, along with examples that help show when this added flexibility is useful.
Subclassing and custom training
Model subclassing and custom training loops provide more control when built-in model structures or training workflows do not fit the task. They are valuable tools, but they add complexity; a beginner can usually defer them until a concrete model requirement calls for them. Browse the relevant topics in the Keras developer guides.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
What to learn after the first model
Build skills in the order your project needs them. The Keras guides and examples cover topics beyond a first classifier, including:
- Loading and preparing data, then evaluating a trained model.
- Saving models and understanding serialization.
- Using callbacks during training.
- Transfer learning and fine-tuning a model.
- Custom layers, distributed training, and custom training loops.
- Finding task-specific patterns in the Keras code examples.
You do not need to learn every advanced feature before building useful models. First become comfortable with the full training and evaluation cycle; then choose the next topic based on what your model or deployment setting requires.
Using Keras 3 with older Keras projects
Keras 3 supports multiple backends, but moving a project from Keras 2 may require code changes. The migration guide is particularly relevant to larger projects or code that relies on private or deprecated APIs. Consult Introducing Keras 3 before adapting an existing project, and test the migrated code rather than assuming that changing imports is sufficient.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
