What is the NEC X0422J?
The NEC X0422J is a network/telecom equipment component, listed by the manufacturer as "RC-28D ACU SER/SA 48V". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
NEC X0422J: a network/telecom equipment component (RC-28D ACU SER/SA 48V). Circular Telecom resells surplus and refurbished units of parts like this, helping operators extend network equipment lifecycles and reduce e-waste.
Common Questions
The NEC X0422J is a network/telecom equipment component, listed by the manufacturer as "RC-28D ACU SER/SA 48V". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished NEC network equipment, including parts such as the X0422J, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue