HP LaserJet 500 Sheet Feeder CF284A Paper Trays & Drawers Accessory Type - Paper Tray 500 Sheet Capacity Compatibility - HP LaserJet Pro 400 Printer M401dn, HP LaserJet Pro 400 Printer M401dne, HP LaserJet Pro 400 Printer M401dw Media Size - Legal A4 - 8.27" x 11.69" Media Type - Plain Paper