> For the complete documentation index, see [llms.txt](https://docs.sevenpens.com/drawtab/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sevenpens.com/drawtab/catalog/accessories/extension-cables.md).
# Extension cables
### Overview
Sometimes your cables just are not long enough. In those cases, you can use extension cables.
Key requirements for an extension cable:
* For pen tablets
* It needs to support data and a small amount of power. Any USB 2.0 extension cable should work.
* For pen displays
* It must support data
* It must support DP alt mode
* It must support the resolution and refresh rate you need
* It must support sending enough power to your pen display
* **SAFETY CRITICAL** It must support **at least** as much power as the tablet's original cable. If it is not rated to handle that much power, it can become a safety or fire risk.
To better understand the requirements for connecting a pen display, see [Connecting a pen display](/drawtab/guides/connecting/connecting-pen-display.md).
## The extension cable I use for pen displays
I use a 2-foot UseBean USB-C extension cable. It has worked well for me. I have run up to `4K@60Hz` through this extension cable.
I used it in these ways:
* With a Huion Kamvas 22 Plus: I connect it to the USB-C end of a Huion 3-in-1 cable.
* With a Wacom Cintiq Pro 16 (DTH-167): I connect it to the USB-C cable that came with the Cintiq.
### 
## Be aware of how deeply the port is housed in the pen display
The specific USB-C extender above has a plug that fits into some pen displays, but other pen displays have more deeply recessed USB-C ports. This cable will not fit those ports.
For example, this extender does NOT go deep enough to fit into a Huion Kamvas 13.
### Links
* Teoh on Tech: Using Extension Cables with Pen Displays or Graphics Tablets
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