Flashing white after you press and hold the top button for 5 seconds. Your pen is in pairing mode and you can pair it with your Surface. Solid white after your select pair on your Surface.

Here’s how it works. The Surface Pen and Surface Slim Pen 2 are the best options for modern Surface PCs; I've been using the former for years without issue, and the latter adds wireless charging ...

1 – Storage tray 2 – Surface Slim Pen 3 – Keyboard 4 ... Press and hold the top button of your pen for 5-7 seconds until the LED light flashes white to turn on Bluetooth pairing mode.