Attachment screed unit for a road paver and road paver having such an attachment screed unit

An attachment screed unit for attachment to a screed unit of a road paver, comprising:

• a connecting screed;
• at least one adjusting screed which is adjustably mounted on the connecting screed and which is adjustable between a retracted position (P1) and an extended position (P2) relative to the connecting screed, as a result of which the paving width (b4) of the attachment screed unit is variable;
• and
• a hydraulic adjusting device, which is arranged in such a manner that it can adjust the at least one adjusting screed between the retracted position (P1) and the extended position (P2),
• the adjusting device comprising an electro-hydraulic unit which is arranged on the attachment screed unit and comprises an electric connection via which the electro-hydraulic unit can be supplied with electric power, and
• the electro-hydraulic unit comprising a separate hydraulic circuit which is independent of, and not fluidly connected to, the hydraulic circuit of the road paver, with the hydraulic circuit being located entirely on the attachment screed, and with the electro-hydraulic unit having at least one electrically driven hydraulic pump and a hydraulic actuator which is driven by the hydraulic pump.