The latest models of USB power meters have multiple ports and can also do some checking of cables (and chargers) including reading the actual e-marker chip for

The latest models of USB power meters have multiple ports and can also do some checking of cables (and chargers) including reading the actual e-marker chip for capabilities and testing the negotiation capabilities of attached USB-PD chargers. https://aliexpress.com/item/1005002835878171.html https://aliexpress.com/item/1005002835878171.html https://bitbang.social/@kalleboo/109391700632886806 https://bitbang.social/@kalleboo/109391700632886806