Crashes, 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 minutePC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Cursor rules can help an AI agent follow a project’s conventions, use its established workflows, and avoid repeating mistakes. They do not guarantee correct code or eliminate low-quality output: treat rules as durable guidance, then review changes and run the project’s normal checks.
Where do Cursor rules go?
Project rules live in .cursor/rules and can be committed with the repository. That makes them available to teammates working in the same codebase and keeps project-specific instructions alongside the project. Cursor’s Rules documentation describes the available rule types, formats, and guidance for writing them.
Cursor uses MDC files for project rules. Their metadata can specify a description, file-path globs, and whether a rule is always applied. Cursor also documents User Rules and Memories; those are distinct from rules committed for one codebase.
The older .cursorrules file is deprecated. Cursor recommends Project Rules instead. Cursor also documents AGENTS.md as a plain Markdown alternative; the exact behavior depends on the Cursor surface you use.
#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.
Choose the narrowest useful scope
Not every instruction belongs in every agent task. Choose a rule type based on who needs the guidance and when it should apply.
| Mechanism | Best fit | How it is used |
|---|---|---|
| User Rules | Personal preferences you want to carry across projects | Cursor documents these separately from project rules; they are not the same as instructions committed to a repository. |
| Always | Short, stable project guidance relevant to nearly every task | Included broadly. |
| Auto Attached | Conventions that apply to particular files or directories | Attached when file paths match the rule’s configured glob. |
| Agent Requested | Specialized guidance the agent may need for some tasks | Made available for the agent to select; include a clear description so its purpose is understandable. |
AGENTS.md |
Plain Markdown project instructions | Cursor documents this as an alternative to MDC project rules. |
For example, a repository-wide instruction to run the standard test command may belong in an always-on rule. A React component convention can be scoped to matching frontend files. A deployment procedure used only for release work can be an agent-requested rule with a description that makes its use clear. Avoid implying that every rule is active for every task: activation depends on the chosen type and scope.
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.
How do I create Cursor rules?
- Find recurring corrections. Look for project facts the agent repeatedly misses: which test command to run, which helper to use, or which existing pattern a new feature should follow.
- Choose a home and scope. Put project-specific instructions in
.cursor/rules, then select Always, Auto Attached, or Agent Requested according to when the instruction is relevant. - Write an observable action. Replace broad requests such as “write clean code” with a specific direction, such as “Use the existing API validation helper in
src/....” Replace the example path with the actual file in your repository. - Point to canonical examples. Name a representative file or existing implementation instead of copying a large amount of project documentation into the rule.
- Keep it focused and maintain it. Split unrelated topics into separate, composable rules. Update instructions when commands, file structure, or project conventions change.
Cursor’s best practices for coding with agents give examples of concrete context such as build, type-check, and test commands, code-style conventions, and directions to follow an established project pattern. Substitute the real commands and files for your own project rather than copying example values literally.
What should a useful rule file say?
Cursor’s Rules documentation says, “Good rules are focused, actionable, and scoped.” It also advises: “Avoid vague guidance. Write rules the way you would write a clear internal doc.” In practice, a rule should help an agent decide what to do in a particular situation, not merely ask it to produce a desirable result.
Rank #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.
For example, a project rule might give the actual test command, identify a canonical component, and direct the agent to use the project’s existing validation helper for API input. These are illustrative details: replace them with your repository’s commands, conventions, and paths.
Keep a rule concise. Cursor recommends under 500 lines as a good target, not as a measured cutoff at which agent performance changes. If one file is accumulating unrelated policies, split those topics into separate rules and scope each appropriately. Referencing a canonical implementation can also be clearer than embedding extensive documentation.
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
How can I stop Cursor from changing code conventions?
Make the relevant convention explicit, attach it to the work where it matters, and point to an example the agent can follow. For a formatting or component convention, a path-based rule can limit the instruction to matching files. For a project-wide workflow, an always-on rule may be appropriate. If a convention only applies to a specialized task, use a described agent-requested rule.
When the repository changes, revisit the associated rule and its file references. A stale command or example can send the agent in the wrong direction. For the CLI specifically, Cursor says it reads root-level AGENTS.md and CLAUDE.md alongside .cursor/rules; do not assume that CLI behavior describes every Cursor UI workflow. See Cursor’s CLI documentation.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
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.
Do Cursor rules prevent bad code?
No guarantee is established by Cursor’s documentation. Rules shape the context and consistency of an agent’s work; they are not proof that a change is correct, complete, or safe. No source cited here provides a controlled Cursor-specific statistic showing how much rules reduce low-quality output.
Inspect the generated diff, confirm that the intended instructions were relevant to the task, and verify the change using the project’s normal review and checks. Depending on the project, that may mean running its build, type-check, and tests. A rule that asks for a check does not replace running it or examining the result.
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.
