Replacement of Fiber Modem Power Cord

radio shack

Model of unit?

Maybe online search?

I would expect one of three models, each has a different power supply.

The 5268 is power brick with separate cord

The 210 is actual a DirecTv power supply

https://www.amazon.com/AT-ATT-Model-EPS36R0-16-Adapter/dp/B07DQMB9ZR/ref=pd_lpo_3?pd_rd_i=B07DQMB9ZR&psc=1

The 320 is 3 pin cord

In all case the cord comes with the gateway…. Thus if need a cord you need a new gateway from ATTbto be shipped to you… replace both and return original equipment.

The alternate is you purchase a power supply wherever can find one.

Model number: BGW320-500

I believe the 320 is a EPS48 power supply, look at the unit… Amazon, eBay most likely source

Or call and request a replacement 320 be shipped to you, current unit has no lights

This matches the ID that the FCC says is the power supply.  See if it matches your power supply.

https://www.ebay.com/itm/393897016661