Why won’t my laptop charge when connected to Swytch?

Swytch provides USB Power Delivery (USB PD V3.0) up to 60W, for compatible laptops that charge via USB Type C.

Swytch supports the following USB Fixed PDO (voltage) profiles:

 The table above displays the supported USB fixed PDO voltage profiles.

Acceptance of USB-PD voltages and wattage requirements varies between charging devices. Many laptops may prefer greater wattages, but accept lower wattages. The voltages (5/9/12/15/20V) are fixed, while current, and therefore wattage, is variable. To be compatible with Swytch, a laptop must accept one of the supported voltages, at a current level up to 3.0A.

If the minimum charging demands of a laptop exceed the Swytch USB PD profiles, and a USB PD negotiation does not complete, USB enumeration of the connected devices will not happen.

Under these circumstances, USB PD negotiation with Swytch can be bypassed in the following ways:

• Connecting via the USB-A connector of the Swytch Y-cable

• Connecting the laptop’s proprietary PSU

Where the above options are unworkable and a USB-C connection is a strict requirement, replacing the Swytch Y-cable with a solution enabling USB-C connection between laptop and the Swytch extender USB 3.0 Micro B port may resolve the issue.