These new trains will offer more seats, the latest standards in accessibility, modern soft furnishing, at-seat USB chargers and upgraded air conditioning
(Permalink) Belfast Class 4000 Translink

Translink has taken delivery of the first three of 21 intermediate cars ordered from CAF to extend seven existing NI Railways Class 4000 diesel multiple-units from three to six cars for use on busier routes.
(Permalink) CAF Class 4000 NI Railways Translink