After downloading, extract the folder and run the executable. Once installed, your computer will assign a COM Port number to the cutter. 2. Supported Cutting Software

The (or SK870T) is a 34-inch vinyl cutter/plotter frequently used for professional sign making. Because Seiki is an older brand, finding a dedicated "standalone" driver can be tricky; the machine is typically driven through specific cutting software that has the driver built-in. Essential Seiki 870T Driver & Setup Guide 1. Where to Find the Drivers

Make sure you are using a short USB cable and that the plotter is grounded, as communication errors are common, says a post on USCutter Forum If you see "Driver Not Found": Download the updated drivers from Software for Seikitech SK870T plotter - PlotCalc

Last updated: 2025 For direct driver assistance, contact your Seiki printer distributor or check the support section of your POS provider.

Follow these steps to download and install the Seiki 870T driver using the UPD software: