What is the NEC SLIB(4)-U10?
The NEC SLIB(4)-U10 is a circuit board, listed by the manufacturer as "Single Line Interface Board". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
NEC SLIB(4)-U10: a circuit board (Single Line Interface Board). 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 SLIB(4)-U10 is a circuit board, listed by the manufacturer as "Single Line Interface Board". 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 SLIB(4)-U10, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue