Laser Jet 4500/4550 Optional 500 Sheet feeder (C4082A). Compatibility: 4500N/DN/ 4550N/DN/HDN. Media Sizes: Letter, Legal, A4, Executive, B5 (JIS), B5 (ISO), A5, and custom paper as small as 5.8 X 8.2 inches, and as large as 8.5 X 14 inches Capacity: 500 Sheets This option is great for large scale companies that want to cut out down time on loading paper, and for consumers who do a large number of print jobs. This accessory reduces user intervention and increases productivity through higher input capacity and media versatility. This item was pulled from a working printer, and is 100% functional. It has been tested as to assure our customers have no complications, or malfunctions. If there is ANY question, Please contact us and we would be happy to explain anything about any particular item. We value your business and would like to continue to serve your printer & technology needs. Weight: 25 lbs Dimensions: 19.5 in x 18.5 in x 10.0 in Warranty: 90 Day Hardware only.